VISIBLE BUSYLIGHT FOR ULTRA-WIDE ANGLE: Visibility indicators built-in in both sides of the BH72-lite wireless bluetooth headset, automatically activated by coming calls or manually operated. Automatically glow red when you make a call or attend a meeting, reducing external interference. Focus on the conversation. Yealink help you to work and collaborate intently. We are committed to providing our clients with the best products and services. PLEASE CONTACT US WITH ANY QUESTIONS. BROAD COMPATIBILITY & SEAMLESS UC EXPERIENCE: Yealink BH72 are universally compatible to work with common calling applications across most leading platforms and operating systems. Users can enjoy consistent call experience across UC platforms, such as Microsoft, Zoom, Google, AVAYA ect, which promises better communication quality, higher productivity and lower IT costs. BH72 are certified for Microsoft Teams, designed with a dedicated Teams button for activating Microsoft Teams with one touch. SUPER LONG BATTERY LIFE & MULTI-FUNCTIONAL WIRELESS CHARGING: Yealink BH72 wireless bluetooth headset offers Up to 40 hours music time, up to 35 hours talk time, 112 hours standby time, covering one week's working need normally and accompanying you to fight till the last minute without power anxiety. The optional Qi wireless charging stand for the BH72 provides easy charging whilst while keeping the device on the desk. This same charger works for any device that supports Qi – like a mobile. UNPARALLELED MUSIC & CALLING EXPERIENCE: Designed for music and calls, it can switch between call mode and music mode. Using industry-leading professional acoustic component—the Ole Wolff diaphragm, which provides a wider frequency response and higher sensitivity of music, enabling everyone to enjoy the full sound of originalities and fineness. With Yealink Acoustic Shield Technology, the two microphones block the background noise automatically but ensure participant voice be heard clearly. RETRACTABLE MICROPHONE BOOM: Yealink BH72 Bluetooth Wireless Headset is equipped with Yealink’s uniquely designed retractable hidden microphone arm with magnetic slide. You can easily pull out the microphone boom arm to obtain professional audio quality, and can easily hide the microphone boom arm, to obtain a stylish appearance. It allows you to enjoy music more simply and can easily adapt to various outdoor activities. Just enjoy all-day comfort.