The BlueParrott M300-XT Bluetooth headset is engineered for superior calls in high-noise environments. Its ultra-light discreet design blocks out 80% of background noise using 2-microphones, it connects to 2 Bluetooth devices for more flexibility, and has a long battery life that offers up to 14 hours of talk time for all-day conversations. The ability to roam up to 300ft/100m gives you the freedom to leave your paired Bluetooth device behind. It is equipped with a customizable BlueParrott button which can be programmed for mute, speed dial or Push-to-Talk in the BlueParrott app. Included are 3 different size EarGels for a secure comfortable fit and the headset is adjustable to wear on the right or left ear. For optimal headset performance, the M300-XT headset should be used only with a Bluetooth enabled smartphone/tablet device. Not intended to be used with a laptop/PC.