Microsoft Certified Teams Standard Bluetooth Wireless Headset * Binaural Ear (dual ear) over-the-head Headset * Color: Black * Dual Busylight on headset * Leather Ear Cushions(Replaceable) * Yealink Acoustic Shield Technology * Support wireless charging * Discrete Hidden Boom Arm * Talking Time(up to)35H * Bluetooth:5.1 * Support Yealink Connect APP and Yealink USB Connect Manager * USB 2.0 Cable : USB-A * Teams Button