Microsoft Certified Teams Standard Bluetooth Wireless Headset • Binaural Ear (dual ear) over-the-head Headset • Color: Black • Active Noise Cancellation (ANC) Support • Wearing Detect • Audio Codec:Aptx-HD • 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