Additional Details ------------------------------ Product description: Yealink WH62 Dual UC DECT Wireless Headset 5 feature buttons 2 micro USB 2.0 port USB connectivity to PC and IP phone Integrated busylight LED indicator Boom arm adjustable: 320° Charging stand (for headset) Talk time: up to 13 hours Charging time: 2.5 hours DECT Wireless range: up to 160m/525 feet Secure DECT (level): Step B - authentication - DSAA, encryption - DSC (64bit) Dual microphone Easy Call Management: Answer/End/Reject a call; Volume up/down; Microphone mute; Move the microphone boom arm up to mute, or down to unmute Desk phone compatibility: This headset is only compatible with Yealink and other 3rd party IP Desk phones that have a USB Port.