In-ear Bluetooth headset MS Teams-optimised EPOS ActiveGard technology: protects users against acoustic injury caused by sudden sound burst on the line Buttons on the neckband to answer/end call, mute, ANC on/off, volume control and one touch accessto your preferred Voice Assistant Battery life: Up to 15 hours listening time (ANC switched off) Up to 14 hours talk time (ANC switched on) Certified for Microsoft Teams Includes: 4 different pair of earbuds, BTD 800 USB dongle, USB cable withmicro-USB connector and carry case