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• Don't 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