The Plantronics Savi 8245 is a wireless headset that connects to a desk phone, PC, and mobile phone. The wireless headset system provides the freedom of long-range wireless communication. It also makes call management effortless with three-way connectivity that lets you switch seamlessly between all three; PC, desk phone and mobile. You can conference two of the three devices to collaborate with colleagues. The Savi 8245 features Bluetooth v4.2 which keeps your device connected. With some discreet security measures, including authentication, subscription verification and encryption. Call Controls such as call answer/end, volume up/down and mute lets you manage calls from any connected device within roaming range. Savi 8245 has a choice of wearing styles, including the 3-in-1 convertible options.Savi 8245 Features:1.9GHz Wireless Frequency3-in-1 Convertible Wireless HeadsetNoise Cancelling MicrophoneUnlimited Standby TimeBluetooth v4.2Wireless Range:- Up To 590 ft Line Of Sight Range- Up To 180 ft Office EnvironmentHi-fi Stereo Sound140mAh Battery Capacity3 Hours Charge TimeThree-way Connectivity- Switch Seamlessly Between PC, Mobile & Desk PhoneFlexible Microphone Boom DesignMultiple Voice PromptsSoundGuard Digital- For Protection Against Sound Level above 112 dBAG616 Anti-Startle (During Calls)- Detects & Eliminates Any Large Sudden Increase In Signal LevelMulti-Unit ConferencingFrequency Response: 100 - 6800 Hz (Wideband), 20 Hz - 20 kHz (Multimedia)On Headset Controls:- Call Answer/End- Mute and Volume +/-- ANC On/Off- Power On/OffSpeaker Sensitivity: 118 db SPL MaxSpeaker Impedance: 32 ohms