Microsoft Lync optimized. Wireless Bluetooth technology gives you up to 30 meters / 100 feet of hands-free connectivity to PC, smartphone and tablet. Up to 10 hours battery life eliminates battery concerns. Simply tap to connect devices with NFC. Dual connectivity enables you to connect your headset to your PC and one other Bluetooth device at the same time, so you can take the call on your preferred phone device. Busy light signals user availability. The microphone boom arm can be integrated into the headband when not on a call. Microphone mute on boom arm. Built for style and comfort with leatherette ear cushions. Soft pouch included.