2.5MM JACK TELEPHONE HEADSET: 【NOT for Cell Phones and Computers】This office phone headset is ONLY compatible with Panasonic Dect 6.0 AT&T VTech RCA Cisco SPA Uniden Grandstream Polycom Gigaset Clarity Zultys Cortelco landline phones and most Cordless Dect phones with standard 2.5MM headset jack. SEE MORE COMPATIBLE PHONE LIST IN DESCRIPTION. | Panasonic DECT PHONES COMPATIBILITY: The phone headset for Panasonic cordless phones KX-TGF575S, KX-TGF352N, KX-TGA470, KX-TGA652, KX-TGA660, KX-TGA931T, KX-TGA950B, KX-TGE430B, KX-TGE432, KX-TGE433B, KX-TGEA20, KX-TGEA40, KX-TG6592T, KX-NT136, KX-NT343, KX-NT346, KX-NT366, KX-T7603, KX-T7625, KX-T7630, KX-T7633, KX-T7636, KX-T7730, KX-T7735, KX-T7736, KX-TG7731, KX-TGA470C, KX-DT521, etc. ONLY works for phones with 2.5MM headset jack. For other phones, pls contact us for compatibility advice. | CRYSTAL CLEAR CHAT: Business-grade Wideband 2.5mm office telephone Headset with flexible adjustable Noise-Cancelling Microphone for crystal-clear conversations, Acoustic Shock Protection to protect your hearing. Perfect for Call Center, Telephone Counseling Services, Insurance, Hospitals, Office and Home. | ULTRA COMFORT: Super lightweight landline Panasonic phone headphone with adjustable headband to fit all head sizes, soft leatherette ear cushion enhances all-day wearing comfort. Easy to use, plug the headset directly into the 2.5mm headset jack on your phone, no additional amplifiers or adapters required. | SUPER DURABLE & 2 YEAR WARRANTY: 45 days money back & 24-month worry-free guarantee. Professional Mic Mute / Volume Control built in. Precision design, quality plastics, uni-body headband construction, high quality microphone makes this call center headset for Panasonic phones sturdier and more durable.

3.5MM JACK UNIVERSAL COMPATIBILITY: Works for iPhone, Samsung, most smartphones and Computer Laptop PC Mac iPad Tablet or any electronic device with a 3.5mm audio jack connection. Includes a 3.5mm Y-adapter for Dual-Jack PC or Laptop. For iPhone 7/8/X/XS/XR or latest version of iPhone, Apple Original Lightning to 3.5mm Adapter is Needed. Doesn’t come with Headset(Supplied by Apple Store). | CRYSTAL CLEAR CALLS: Wired PC headset with noise cancelling mic reduces unwanted background noise for clear conversation. Flexible and adjustable boom can be positioned for better voice capture. Built-in Acoustic Shock Protection Circuit protects your hearing. | SUPER LIGHTWEIGHT & COMFORTABLE: Callez hands free 3.5mm cell phone headset with adjustable headband allows to fit all head sizes. The soft and high quality leatherette ear cushion and super lightweight design ensure all-day comfortable wearing. | EASY AND CONVENIENT TO USE: This Mono 3.5mm computer headphone supports easy plug-and-play operation for PC, Laptop, Cell Phone or Tablet, no installation needed. Simple in-line controls allow you adjust the volume or answer/end calls without disruption. | ULTRA DURABLE & 2-YEAR WARRANTY: 45 days money back & 24-month worry-free. Precision design, quality plastics, uni-body headband construction make this laptop headset more durable and sturdier. Perfect for Classroom, Home, Office, Work, Business, Call Center, Conference Calls, Skype, Zoom and more.

【WIDE COMPATIBILITY】: Compatible with iPhone, Samsung, most smartphones and Computer Laptop PC Mac iPad Tablet with single 3.5mm audio jack. Includes a Dual 3.5mm Y-adapter for separate headphone and microphone connection to a PC or Desktop. For iPhone 11/12/13...Newer iPhone, Original Lightning to 3.5mm Adapter is required(Must be supplied by Apple Store, otherwise the headset will not work on the phone calls). | 【2-YEAR WARRANTY & ULTRA COMFORT】: 45 days money-back & 24 months warranty. Ultra lightweight 3.5mm Cell Phone Headset with adjustable headband to fit all head sizes, 330°adjustable boom mic, soft and breathable ear cushion enhance all-day wearing comfort. | 【SIMPLE CALL CONTROLS & MULTI-PURPOSE】: Simply plug in and play. Easy to adjust volume up/down, answer/end a call. Callez Computer Headphone is perfect for Skype Chat, Call Center, Office, Business, K12 School Classroom, Online Courses, Conference Calls, Webinars, Dictation, MP3 players, Computer Games and more. | 【CRYSTAL CLEAR CALLS】: Professional 3.5mm Call Center Phone Headset enables natural listening experience. Built in high quality noise cancelling microphone to reduce background noise and provide crystal clear sound quality. Acoustic Shock Protection Circuit protects your hearing. | 【ULTRA DURABLE】: Precision design, quality plastics, unibody headband construction, flexible microphone boom makes this 3.5mm PC Headset sturdier and more durable. Compete with Jabra Business Office Headsets.

【WIDE COMPATIBILITY】: Compatible with iPhone, Samsung, most smartphones and Computer Laptop PC Mac iPad Tablet with single 3.5mm audio jack. Includes a Dual 3.5mm Y-adapter for separate headphone and microphone connection to a PC or Desktop. For iPhone 11/12/13...Newer iPhone, Original Lightning to 3.5mm Adapter is required(Must be supplied by Apple Store, otherwise the headset will not work on the phone calls). | 【CRYSTAL CLEAR CALLS】: Professional 3.5mm Cell Phone Headset enables natural listening experience. Built in high quality noise cancelling microphone to reduce background noise and provide crystal clear sound quality. Acoustic Shock Protection Circuit protects your hearing. | 【EASY TO USE & MULTI-PURPOSE】: Simply plug in and play. Easy to adjust volume up/down, answer/end a call. Callez Computer Headset is ideal for Skype Chat, Call Center, Office, Business, Conference Calls, Online Courses, Webinars, K12 School Classroom, Dictation, YouTube Recording, MP3 players, PS4, Xbox one, Computer Games and more. | 【ULTRA DURABLE】: Precision design, quality plastics, unibody headband construction, flexible microphone boom makes this 3.5mm PC Headphone sturdier and more durable. Compete with Jabra Business Office Headsets. | 【2-YEAR WARRANTY & ULTRA COMFORT】: 45 days money-back & 24 months warranty. Ultra lightweight Call Center Phone Headset with adjustable headband to fit all head sizes, 330°adjustable boom mic, soft and breathable ear cushion enhance all-day wearing comfort.

3.5MM JACK WIDE COMPATIBILITY: Works for iPhone, Samsung, most smartphones and Computer Laptop PC Mac iPad Tablet with 3.5mm audio jack. Includes a 3.5mm Y-adapter for Dual-Jack PC or Laptop. For iPhone 7/8/X/XS/XR or latest version of iPhone, Apple Original Lightning to 3.5mm Adapter is Needed. Doesn’t come with Headset(Supplied by Apple Store). | EASY TO USE: Simply plug and play, no installation needed. Connect this 3.5mm headset directly to your iPhone smartphone, computer, tablet or any electronic device with a 3.5mm audio jack connection and you’re ready to talk. Easily adjust volume up/down, answer/end calls. | CRYSTAL CLEAR CALLS: Callez 3.5mm stereo cell phone headset for iPhone enables natural listening experience, noise-cancelling microphone reduces background noise for crystal clear conversation. Built-in Acoustic Shock Protection Circuit protects your hearing. | SUPER LIGHTWEIGHT & COMFORTABLE: Callez hands free PC headphones with adjustable headband allows to fit all head sizes, a flexible boom mic to suit your preference, soft and high quality ear cushions and super lightweight design ensure all-day wearing comfort. | ULTRA DURABLE & 2-YEAR WARRANTY: 45 days money back & 24-month worry-free. Precision design, quality plastics, uni-body headband construction make this 3.5mm computer headset more durable and sturdier. Perfect for Classroom, Home, Office, Work, Business, Call Center, Conference Calls, Webinars, Skype, Zoom and more.

【Compatible with CISCO IP Phones】This Phone headset works with most Cisco phones with RJ9 headset port, such as 7931G 7940 7940G 7941 7941G 7942 7942G 7945 7945G 7960 7960G 7961 7961G 7962 7962G 7965 7965G 7970 7970G 7971 7971G 7975 7975G 6821 6841 6851 6861 6871 6921 6941 6945 6961 7811 7821 7841 7861 8811 8841 8845 8851 8861 8941 8945 8961 9951 9971 or M10, M12, M22 and MX10 Amplifiers. NOT compatible with Cisco SPA phone series. | 【Crystal Clear Calls】 This high sound quality Phone Headset with Microphone enables clear and natural communication, features Noise Cancelling Microphone to reduce background noise for Call Centers. Acoustic Shock Protection Circuit to protect your hearing. Mono headset can be worn on either side and you can still communicate with your colleague while wearing it. | 【Ultra Comfort】Lightweight Wired Hands-free Telephone Headset for Cisco Desk Phones with adjustable headband to fit different head sizes, high quality and soft leatherette ear cushions enhance all-day wearing comfort. Professional Mic Mute/Volume Control built in. Ideal for Call Center, Office, Home, Business, Telephone Counselling Services. | 【Quick Disconnect Cord & Super Durable Design】A QD (Quick Disconnect) to RJ9 plug-and-play makes the connectivity to Cisco phones at ease and enables you to walk away from the desk without taking headset off. Precision design, quality plastics, unibody headband construction, flexible mic boom makes this office phone headset with RJ9 jack sturdier and more durable. | 【2-Year Warranty & Compatibility Notes】Callez offers 45 days money back & 2-year worry-free guarantee. THIS TELEPHONE HEADSET DOESN’T WORK FOR SMARTPHONES AND COMPUTERS. ONLY COMPATIBLE with some specific CISCO phone models listed in description (include but not limited). For Other Phone Models, Pls contact us for Compatibility Guide or Advice.

【Plug and Play with 3.5mm Jack】 This 3.5mm headset with microphone includes a Dual 3.5mm Y-adapter. Compatible with PC, Tablet, Mac, Laptop, iPhone Android Cell Phone and other devices with 3.5mm Audio Jack. For iPhone 7...or Newer Model, Apple Original Lightning to 3.5mm Adapter is needed (Supplied by Apple). | 【Be More Productive with Clear Calls】330° Rotatable mic can be positioned on the left or right for better voice capture. This computer headset uses Noise Cancelling technology to deliver a clear communication. Say goodbye to unwanted background noise and experience crystal clear calls. Ideal for office, call centers, online meetings and more remote work. | 【1.97oz Lightweight Wired Headset & No Pressure to Wear】For those who need to talk for a long time, this cell phone headset is a good choice. The soft leatherette ear cushion is made of high-level breathable materials and fits gently on your ears. Adjustable headband gives you a customized fit. You won't feel stuffy or uncomfortable. | 【Simple Call Controls & Easy to Use】Plug and play, No drivers needed. Easy to adjust this laptop headphone volume up/down and answer/end a call. Also, the 5.2ft long cable ensures uninterrupted connectivity, no need worry about low battery and no signal. This work headset keeps your focus on the conversations and enhances work productivity. | 【24 Months Warranty & Multi-Purpose】We offers 45 days money-back & 24 months warranty. Callez PC headset is perfect for Call Center, Office, Business, Zoom Skype Chat, Conference Calls, Dictation, Rosetta Stone, Dragon Speaking, Online Courses, Webinars, YouTube Recording, Podcast, K12 School Classroom and more.

【Compatible List for Yealink IP Phones】RJ9 connectivity to Yealink IP phones, including T19(P)E2/ T20P/ T21(P)E2/ T22P/ T23P/ T23G/ T26P/ T27G/ T28P/ T29G/ T30/ T30P/ T31/ T31P/ T31G/ T33P/ T33G/ T38G/ T40P/ T40G/ T41S/ T42S/ T46S/ T48S/ T42U/ T43U/ T46U/ T48U/ T53/ T53W/ T54W/ T57W/ T58A/ VP59/ T41S SFB/ T42S SFB/ T46S SFB/ T48S SFB/ T55A SFB/ T56A SFB/ T58A SFB/ MP56 etc. | 【Perfectly Compatible with More VoIP Phones】Direct connect over the head landline telephone headset with microphone. Compatible with Yealink All IP Phones, Avaya 1608 1616 9608G 9611G 9620 9630 9640 9641G 9650 J139 J169 J179, Snom VoIP Phones 300 320 360 710 821 870 , Grandsteam GXP 1400 1405 1610 1615 1620 1625 1630 2000 2120 2124 2130 2135 2170 280 285 GRP2613 GRP2604P GXV3005 3006 3240 3275 3370 and more desk phones listed in description. | 【Crystal Clear Calls】 High sound quality RJ9 Call Center Phone Headset with Microphone enables excellent sound quality for natural listening experience, features Noise Cancelling Microphone to reduce background noise, Acoustic Shock Protection Circuit to protect your hearing. Less noise, Clearer voice. | 【Super Comfort & Ultra Durable】Hands-free RJ9 Office Phone Headset with adjustable headband to fit all head sizes, high quality and soft leatherette ear cushion enhance all-day wearing comfort. Professional Mic Mute/Volume Control built in. Precision design, quality plastics, unibody headband construction, superior quality microphone makes this landline phone headset sturdier and more durable. | 【2-Year Warranty & Compatibility Tips】We offer 45 days money back & 24-month worry-free guarantee. THIS RJ9 JACK DESK PHONE HEADSET DOESN’T WORK FOR SMARTPHONES AND COMPUTERS. ONLY COMPATIBLE with some specific phone models listed in description (include but not limited). For Other Landline Phones, Pls contact us for Compatibility Guide or Advice.

2.5MM TELEPHONE HEADSET (for landline and cordless phones only): COMPATIBLE WITH AT&T Vtech Panasonic Uniden RCA Cisco SPA Grandstream Zultys Gigaset Office landline and most cordless dect phones with standard 2.5mm headset jack. For compatibility list in details, please check description below (include but not limited). NOTE: THIS PHONE HEADSET DOES NOT BE USED FOR CELL PHONES AND COMPUTERS. | CRYSTAL CLEAR CALLS: Mono 2.5MM landline phone headset with 330°adjustable, flexible microphone supports your wearing preferences and delivers optimal clear voice. Noise-cancelling mic reduces background noise. Acoustic Shock Protection Circuit protects your hearing from fatigue and loss. | LIGHTWEIGHT AND COMFORTABLE: Wired office headset with adjustable and flexible headband fits all head size perfectly and wear on firmly. Ultra lightweight telephone headset equipped with soft leatherette ear cushion improves the comfort of all-day wearing. | EASY TO USE: Directly plug and use, no additional amplifiers or adapters required. The business telephone headset has inline volume control and mute switch to provide convenience for calls, which is an ideal choice for call center services, teleconferences, telemarketing, homes and offices. | ULTRA DURABLE & 2 YEARS WARRANTY: 45 days full refund and 2 years warranty. DON'T BUY IT FOR COMPUTERS AND CELL PHONES. Professional structural design with solid cord ensures this office phone headset more durable.

2.5MM TELEPHONE HEADSET: WIDE COMPATIBLE WITH Panasonic AT&T Vtech RCA Uniden Cisco Linksys SPA Grandstream Gigaset Zultys Technologies most cordless DECT phones and landline phones with 2.5mm headphone Jack. For compatibility list in detail, please refer to description below. NOTE: THIS PHONE HEADSET DOES NOT APPLICABLE TO MOBILE PHONES AND COMPUTERS. | DESIGN FOR CLEAR CHAT: 330° adjustable, flexible microphone phone headset support to wear on either the left or right side and pick up your clear loud voice terrifically. Built in noise cancelling mic works fairly well to reduce background noise and provide crystal clear sound on both ends. Acoustic shock protection circuit protects your hearing carefully. | MOST COMFORTABLE PHONE HEADSET: The mono hands free business telephone headset with adjustable headband allow fitting all head size suitably and firmly wearing on. The soft leatherette ear-pad and lightweight design improve all-day wearing comfort. | EASY AND CONVENIENT TO USE: Directly connect the phone headset with your cordless DECT phones or desk phones, no additional amplifiers or adapters required. 2.5mm hands free telephone headsets with cord clip included contains volume and mute control onto the cord, which is customized for Call Center Service, Conference Calls, Telemarketing, Home and Office. | ULTRA DURABLE AND 2 YEAR WARRANTY: The solid construction and cord ensure this office phone headphone more durable and better avoid damaging during the use. The telephone headsets come with 45 days return for replacement and 2 year warranty. DON'T BUY IT FOR COMPUTERS AND CELL PHONES.

【NOT for Cell Phones and Computers】COMPATIBLE with some specific landline Phone Models in description like Yealink Grandstream Avaya Cisco Panasonic Snom Zultys, etc. This RJ9 phone headset for Yealink VoIP phones T23G, T27G, T29G, T32G, T33G, T38G, T40G, T42G, T46G, T48G, T49G, T41S, T42S, T46S, T48S, T52S, T53W, T54W, T57W, T55A, T56A, T58A, T42U, T43U, T46U, T48U,T20P, T21P, T22P, T26P, T27P, T28P, T40P, T41P, etc. | Grandstream IP Phones Compatibility: Works for Grandstream GXP1400, GXP1405, GXP1450, GXP1610, GXP1615, GXP1620, GXP1625, GXP1628, GXP1630, GXP1200, GXP2000, GXP2100, GXP2010, GXP2110, GXP2020, GXP2120, GXP2124, GXP2130, GXP2135, GXP2140, GXP2160, GXP2170, GXP280, GXP285, GXV3005, GXV3006, GXV3240, GXV3275, GRP2612, GRP2612P, GRP2612W, GRP2613, GRP2614, GRP2615, GRP2616 IP Phones. For other phones and models, please feel free to consult us for compatibility guide and advice. | Crystal Clear Chat: This corded telephone headset with flexible, adjustable noise-cancelling microphone to reduce background noise in noisy environment and Acoustic Shock Protection Circuit to protect your hearing. Fewer noises, clearer voices. | Super Comfortable: Super lightweight phone headphone with adjustable headband to fit all head sizes. Soft leatherette ear cushion make you feel less pressure on your ear to enhance all-day wearing comfort. | Durability & Warranty: Precision design, quality plastics, unibody headband construction and superior quality microphone make this call center headset sturdier and more durable. The telephone headsets come with 45 days return for replacement and 2 year warranty.

Polycom IP Phones Compatibility: RJ9 wired phone headset fits for Polycom VVX411 VVX311 VVX410 VVX500 VVX400 VVX300 VVX301 VVX310 VVX501 VVX401 VVX201 VVX601 VVX250 VVX350 VVX450 VVX101 VVX150 VVX330 VVX600 CX300 CX500 CX600 CX700 SoundPoint 300 301 335 430 450 500 (rev. E or later) 501 550 560 600 601 650 670. NOT for Polycom SoundPoint IP320, 321, 330, 331, Pro SE-220, SE-225. | RJ9 Jack Phone Headset: Callez telephone headset Compatible with Some Specific Landline Phone Models from Polycom Avaya Mitel NEC Toshiba Shoretel Aastra Allworx Zultys Nortel InterTel AltiGen and etc. Please check Compatible List in description before purchasing. NOT FOR CELL PHONES OR COMPUTERS. | Crystal Clear Calls: Hands free office phone headset delivers crystal clear sound for conversations, features Noise Cancelling microphone to reduce unwanted background noise. Acoustic Shock Protection Circuit to protect your hearing. | Ultra Comfort: RJ9 landline phone headset is designed with soft leatherette ear cushions for a comfortable fit. The comfortable over-the-head design and adjustable headband enable this landline phone headset comfortable to wear for extended periods of time. | 2-Year Warranty: Callez telephone headsets are backed by a 45-day money back and 24-month worry-free guarantee. Please review the Compatibility List prior to purchase. For other phones not listed, please contact us for Compatibility Guide or Advice.

【Cisco IP Phones Compatibility】This wired office phone headset is ONLY COMPATIBLE with Plantronics M10, M12, M22 and MX10 Amplifiers or Some Specific CISCO IP Phones models 7931G 7940 7940G 7941 7941G 7942 7942G 7945 7945G 7960 7960G 7961 7961G 7962 7962G 7965 7965G 7970 7970G 7971 7971G 7975 7975G 6821 6841 6851 6861 6871 6921 6941 6945 6961 7811 7821 7841 7861 8811 8841 8845 8851 8861 8941 8945 8961 9951 9971. | 【Phone Compatibility Guidance】NOT for Cell Phones and Computers. IT ONLY WORKS FOR SOME SPECIFIC CISCO PHONE MODELS LISTED IN DESCRIPTION (include but not limited). Not compatible with Cisco Spa phone series. For other phones, pls contact us for Compatibility Guide or Advice. | 【Crystal Clear Calls】The Cisco Headset with RJ9 jack is ergonomically designed to help call center professionals handle busy calls with ease. It features a Noise-Cancelling Microphone to reduce most background noise for crystal-clear conversations, Plus Acoustic Shock Protection to protect your hearing. | 【Ultra Comfort】 Super lightweight landline Cisco headphone with adjustable headband to fit all head sizes, high quality soft leatherette ear cushion to enhance your wearing comfort during long calls. Keep your hands free for a better communication experience. | 【2-Year Warranty & Super Durable】Callez offer 45 days money back & 24-month worry-free guarantee. Professional Mic Mute / Volume Control built in. Precision design, High-quality plastics, uni-body headband construction, high quality microphone makes this Call Center Headset for Cisco Telephone sturdier and more durable.

【Wide RJ9 Jack Phones Compatibility】The office telephone headset Compatible with Some Specific Landline Phone Models from Toshiba Polycom Avaya Plantronics Mitel NEC Shoretel Aastra Allworx Zultys Nortel InterTel AltiGen Digium and etc. Please check Compatible List in description before purchasing. NOT FOR CELL PHONES OR COMPUTERS. | 【Polycom IP Phones Compatibility】 This RJ9 phone headset for Polycom office phones VVX411 VVX410 VVX400 VVX401 VVX500 VVX501 VVX300 VVX310 VVX311 VVX250 VVX350 VVX101 VVX201 VVX301 CX300 CX500 CX600 CX700 SoundPoint 300 301 335 430 450 500 (rev. E or later) 501 550 560 600 601 650 670. NOT for Polycom Phone SoundPoint 321, 331, 331c, Pro SE-220, SE-225. ONLY COMPATIBLE WITH SOME SPECIFIC PHONE MODELS LISTED IN DESCRIPTION. For other models, pls contact us for Compatibility Guide or Advice. | 【Ultra Comfort】 Super lightweight polycom landline headphone with adjustable headband to fit all head sizes, high quality soft leatherette ear cushion to enhance your wearing comfort during long calls. Keep your hands free for a better communication experience. Perfect for Call Center, Telephone Counseling Services, Insurance, Hospitals, Office and Home. | 【Crystal Clear Calls】The Corded Dual Desk Phone Headset with RJ9 jack is ergonomically designed to help call center professionals handle busy calls with ease. It features a Noise-Cancelling Microphone to reduce most background noise for crystal-clear conversations, Plus Acoustic Shock Protection to protect your hearing. | 【2-Year Warranty & Ultra Durable】Callez offer 45 days money back & 24-month worry-free guarantee. Professional Mic Mute / Volume Control built in. The 6.4ft long cord precision design offers flexibility to move around. High-quality plastics and uni-body headband construction makes this Call Center Headset for Polycom Telephone sturdier and more durable.

Compatibility Notices: The compatibility of this telephone training adapter depends on whether your RJ9 headset is compatible with your telephone. As long as your headset is compatible with your telephone, the adapter will work properly. | Compatible Telephones: This RJ9 Y splitter is compatible with Plantronics, Mitel, Cisco, Yealink, Avaya, Polycom, ShoreTel, NEC, Aastra, Nortel, GE and other IP phones. | Easy to Use: Plug and play, can plug either into handset port or 4P4C RJ9 headset port. Allows the use of two headsets on one telephone. Allow you to setup that you can choose either handset or headset for your calls. | Lightweight and Convenient: This telephone splitter is very lightweight and provides clear voice incoming and outgoing, the cord is 19.6 inches (50 cm) long. It helps with training and can also use as an extender. | Great for Training: This telephone training adapter is great for landline phones with RJ9 headset jack. It can splitter into two listeners/callers same conversation simultaneous. Great suitable for business professional, call center, work from home or anywhere.

ENC DUAL MIC NOISE CANCELLING - The USB headset features Dual ENC Microphones noise cancellation technology for a richer and clear communication wherever. Flexible 350-degree Rotational Microphone ensures your voice is always heard clearly with reduced background noise. It is the perfect solution for call center, office, online conference. | ENHANCED SOUND FOR CALL - Equipped with 28mm speakers, this computer headset delivers a high-quality audio for crystal clear calls. Acoustic Shock Protection(ASP) to protect your hearing. Whether you're in a busy office or working from home, you don't miss any details, enjoy comfortable communications and work effectively. | TEAMS CALL BUTTON & MIC MUTE - Easy to Answer/End/Cancel Microsoft Teams calls with a simple click of call button, press once the button to join an active Teams Meeting or bring Teams to foreground on computer. This feature makes Teams meetings effortless. With built-in controls, you can also adjust the Volume +/-, Mute/Unmute Mic. The visual busylight ensures you're not disturbed during meetings, allowing you to focus entirely on your discussions. | WIDE USB-A COMPATIBILITY & STABLE CONNECTIVITY - The wired stereo headset is suitable for PC Mac laptop and other devices with USB-A Port. Whether you’re using MS Teams, Zoom, Skype or other popular platforms, it delivers consistent and reliable performance, never drop and more stable than wireless headset. Plug and play, works with Windows 2000/7/8/10/XP/Vista, Mac OS X operating system. | ULTRA COMFORT & 2-YEAR WARRANTY - Callez 702TA Headset only weights about 3 oz. The 6.56 ft (2 m) cable let you move freely. Adjustable headband, skin-friendly material, soft memory foam, and the ergonomic ear-fitting design allow you to enjoy uninterrupted use for long hours, whether for work or leisure. We offer 45 days money-back & 24 months warranty.

【2-Mic ENC Noise Cancellation】The USB headset features Dual ENC Microphones noise cancellation technology for a richer and clear communication. Flexible 350° Rotational Microphone ensures your voices are clearly conveyed, greatly improving communication efficiency. Ideal for home office, call centers, online meetings and more remote work. | 【Brilliant Audio Quality】Equipped with 28mm speakers, this computer headset ensures that your calls are clear and professional. Acoustic Shock Protection(ASP) to protect your hearing. Whether you're in a busy office or working from home, you don't miss any details, enjoy comfortable communications and work effectively. | 【Teams Call Button & Mic Mute】 Easy to Answer/End/Cancel Microsoft Teams calls with a simple click of call button, press once to open the Teams Window or join MS Teams Meetings. This feature makes Teams meetings effortless. With built-in controls, you can also Mute/Unmute Mic, adjust the Volume +/-. The visual busylight reduces external interference and allow you to focus on the conversation. | 【Wide USB-A Compatibility & Stable Connectivity】 The wired mono headset is suitable for PC Mac laptop and other devices with USB-A Port. Whether you’re using MS Teams, Zoom, Skype or other popular platforms, it delivers consistent and reliable performance. Plug and play, no need additional installation, works with Windows 2000/7/8/10/XP/Vista, Mac OS X operating system. | 【All-day Wearing Comfort & 2-Year Warranty】Callez 700TA Headset only weights about 2 oz. The 6.56ft (2m) cable let you move freely. Adjustable headband, skin-friendly material, soft memory foam, and the ergonomic ear-fitting design allow you to enjoy comfort for extended periods of use, whether for work or leisure. We offer 45 days money-back & 24 months warranty.

【NOT Work with Smartphone and Computer】See Compatible Phone List in Description. ONLY BUY the item if you have one of phone models in the list. Direct connect landline telephone headsets, Compatible with Some Specific Phone Models from ShoreTel Zultys Toshiba NEC Aspire Dterm Nortel Norstar Meridian Siemens ROLM Packet8. Compatible with Plantronics S12... Polycom 300 301 335 430 450 500 501 550 560 600 601 650 670 CX300 CX500 CX600 CX700 VVX300 VVX310 VVX311 VVX330 VVX400 VVX410 VVX411 VVX500... | Comfortable Wearing: Monaural RJ9 deskphone headset with soft leatherette ear cushions guarantees a perfect fit. Lightweight office telephone headset equipped with adjustable headband for all-day wearing comfort. | Clear Calls: Hands-free RJ9 Office phone headset with Noise-canceling microphone to reduce background noise. Wideband audio delivers clearer conversations, while Acoustic Shock Protection Circuit protects from listening fatigue and loss. | Extremely Durability：Ergonomically designed call center phone headset made with high impact plastic to continuous use, and equipped with flexible microphone boom ensure more guaranteed life span. Volume control and mute button built-in. | ONLY COMPATIBLE WITH SOME SPECIFIC PHONE MODELS LISTED IN DESCRIPTION. Buy the item today if you have one of phone models in list. For other phones, please contact us for Compatibility Guide.

Yealink IP Phones Compatibility: RJ9 office phone headset fits for Yealink T19(P)E2, T20P, T21(P)E2, T22P, T23P, T23G, T26P, T27G, T28P, T29G, T30, T30P, T31, T31P, T31G, T33P, T33G, T38G, T40P, T40G, T41S, T42S, T46S, T48S, T42U, T43U, T46U, T48U, T53, T53W, T54W, T57W, T58A, VP59, T41S SFB, T42S SFB, T46S SFB, T48S SFB, T55A SFB, T56A SFB, T58A SFB, MP56 etc. | RJ9 Headset for Multiple VoIP Phones: Wired telephone headset Compatible with Yealink All IP Phones, Avaya 1608 1616 9608G 9611G 9620 9630 9640 9641G 9650 J139 J169 J179, Grandsteam GXP 1400 1405 1610 1615 1620 1625 1630 2000 2120 2124 2130 2135 2170 280 285 GRP2613 GRP2604P GXV3005 3006 3240 3275 3370 and more desk phones listed in description. NOT FOR CELL PHONES OR COMPUTERS. | Crystal Clear Calls: RJ9 landline phone headset with a noise-canceling microphone to reduce background noise and delivers excellent sound quality. Flexible microphone boom captures sound well, plus acoustic shock protection circuit protects your hearing. | All Day Comfort: Super lightweight Yealink phone headset with adjustable headband to fit all head sizes, soft and high quality leatherette ear cushions enhances all-day wearing comfort. Feel no burden during long conference calls. | 2-Year Warranty: Callez hands-free phone headset comes with 45-day money back and 24-month worry-free guarantee. Please check the compatibility list before purchasing. For Other Landline Phones, Please contact us for Compatibility Guide or Advice.

【Compatible List for Yealink VoIP Phones】This RJ9 headset is compatible with All Yealink IP phones, including T19(P)E2/ T20P/ T21(P)E2/ T22P/ T23P/ T23G/ T26P/ T27G/ T28P/ T29G/ T30/ T30P/ T31/ T31P/ T31G/ T33P/ T33G/ T38G/ T40P/ T40G/ T41S/ T42S/ T46S/ T48S/ T42U/ T43U/ T46U/ T48U/ T53/ T53W/ T54W/ T57W/ T58A/ VP59/ T41S SFB/ T42S SFB/ T46S SFB/ T48S SFB/ T55A SFB/ T56A SFB/ T58A SFB/ MP56 etc. | 【NOT for Smartphones and Computers】RJ9 connectivity to Yealink All IP Phones, Avaya J139 J169 J179 1608 1616 9608G 9611G 9620 9621G 9630 9640 9640G 9641G 9650 phones, Grandstream GXP 1400 1405 1610 1615 1620 1625 1630 2000 2120 2124 2130 2135 2170 280 285 GRP2613 GRP2604P GXV3005 3006 3240 3275 3370, Snom VoIP Phones 300 320 360 710 821 870 and more desk phones listed in description. For Other Phones, pls Contact Us for Compatibility Guide or Advice. | 【Crystal Clear Conversations & Ultra Comfort】High quality RJ9 Phone Headset with Microphone enables HD voice audio quality and natural listening experience, features Noise Cancelling Microphone to reduce background noise. Lightweight design with adjustable headband to fit different head sizes, soft leatherette ear cushions enhance all-day wearing comfort. Ideal for Call Center, Office, Home, Business, Telemarketing. | 【Quick Disconnect Cord & Super Durable Design】A QD (Quick Disconnect) to RJ9 plug-and-play makes the connectivity to VoIP phones at ease and enables you to walk away from the desk without taking headset off. Precision design, quality plastics, unibody headband construction, flexible mic boom makes this office phone headset with RJ9 jack sturdier and more durable. Professional Mic Mute/Volume Control built in. | 【2-Year Warranty & Compatibility Notes】Callez offers 45 days money back & 2-year worry-free guarantee. THIS TELEPHONE HEADSET DOESN’T WORK FOR SMARTPHONES AND COMPUTERS. ONLY COMPATIBLE with some specific phone models listed in description (include but not limited). For Other Landline Phones, Pls contact us for Compatibility Guide or Advice.