BH72 black , UC , with USB-A Yealink BH7X Bluetooth Wireless Business Headset series has a business and stylish appearance, high-definition audio quality, retractable hidden microphone arm technology, and Yealink Acoustic Shield Technology supported by dual microphones. It allows users to quickly transform any place into a professional office, supporting high-definition professional audio and music playback experience. BH72 supports a regular version of BH72 Lite, as well as a BH72 version that provides an wireless charging feature and a multi-functional wireless charging stand. It can give more choices for users. Features - Retracted Hidden Microphone Arm - Multiple Microphones Acoustic Sheild Technology - Excellent Audio Expirience and All Day Wearing Comfort - Dual-side Busylight for Full Visable Angles - Up to 40 hours Wireless Battery Life - Qi Wireless Charging (BH72)