The Poly/Plantronics Voyager 4210 Office 2 Way Base MS Teams Wireless Headset with USB-A Cable is a Plantronics wireless Bluetooth headset that is ideally built for UC applications and softphones to optimized for telecommunications, music, media, and compatible with Microsoft Teams. It provides noise-canceling microphone technology, calls controls, media controls, and sound leveling hearing protection for listening comfort and acoustic limiting for protection against sounds above 118 dBA. It is powered with rechargeable, non-replaceable lithium-ion polymer 360mAh typical battery capacity with up to 12 hours talk time, 15 hours listen to time, and up to 13 days standby time.