Ultra-light noise-cancelling Bluetooth headset. Forget background noise when you’re communicating on the go. With two noise-cancelling microphones, the M300-XT cancels 80% of background noise from your end of the call, delivering outstanding quality that keeps you coming across loud and clear. When you spend most of your day working on the go, and need to stay connected all day, you need to know your headset’s battery won’t let you down.