Stereo Headset Made For Voice & Music Optimized for Unified Communication Passive Noise Cancellation w/ Memory Foam Oval Ear Cushions 3-Microphone Call Technology For Outstanding Call Performance 360° Busylight on Earcup USB-A or USB-C Connectivity Dual Bluetooth Connectivity Boom Arm Mute & Answer Call Multi-Device Connectivity 30 Meter/100 Feet of Wireless Range Up to 37 Hours Battery Life