Hear and be heard clearly on calls with the black Microsoft Modern Wireless Bluetooth Headset for Business. Optimized for Microsoft Teams on Surface and Windows 10 computers, this wireless on-ear headset frees you from getting tangled up in cables by pairing with up to two Bluetooth compatible devices simultaneously. A USB adapter is included for computers that don't already have Bluetooth connectivity. The 28mm moving coil speaker drivers have a 100 Hz to 20 KHz frequency response, providing you with crystal clear audio. At the same time, the 2 mems microphone supports beamforming to fully capture your voice. Flipping the mic up automatically mutes it, which is indicated by an integrated LED light. Other convenient on-ear controls include a dedicated Microsoft Teams button and a volume dial alongside mute, hook, and paring buttons. The integrated battery provides up to 30 hours of talk time or 50 hours of music listening and can be fully recharged in about 2.5 hours. The headset also has a 32- to 98-foot range, depending on how crowded your office environment is. The Microsoft Modern Wireless Bluetooth Headset for Business is compatible with Windows 7 to 10, macOS, Android, and iOS devices. Some features may require a software download, which is not supported by macOS.