BLUETOOTH V5.0 & USB DONGLE: The Bluetooth headset comes with built-in Bluetooth V5.0 technology, allowing you to enjoy stable wireless calls up to 30ft. USB dongle supports connection on devices without Bluetooth function, compatible with most PCs and laptops, allowing your calls to be unrestricted by traditional headphone cables | NOISE CANCELLATION: Conambo Bluetooth headset feature a unique noise reduction chipset technology that effectively eliminates 91% of background noise, allowing for noise reduction processing no matter where you are. Ideal for truck drivers, remote work, driving, online conference, work from home | LONG-LASTING TALKTIME: With up to 16 hours of talktime or 160 hours of standby time on a single charge, this wireless headset ensures that you can stay connected throughout your workday or long conference calls without worrying about battery life | BUILT FOR COMFORT: The wireless headset with mic only 2.8 ounces, lightweight for all-day wear. Bluetooth headset has a retractable headband to help fit different head sizes, 300° rotatable microphone can be worn on either the left or right ear, the bendable mic helps you easily find the best angle to capture the clearest sound | EASY TO USE: The bluetooth headset with prominent multifunctional button and volume up/down button, allowing you to quickly and easily access your favorite features. Long press the MF button to turn on/off wireless headset, quickly enter pairing mode, also answer/hang up and reject calls. (Only for Phones)