Voyager Focus UC Bluetooth USB B825 Headset from Plantronics. Connect to your laptop, Bluetooth enabled desk phone, mobile phone, and tablet. Whether on the phone or listening to music you can move seamlessly from device to device while voice alerts announce caller ID, mute, connection status, and talk time level. With built-in smart sensors the headset knows when you take if off and automatically mutes your call or pauses your music. The boom found on the Voyager Focus can be worn on either side of your face and features active noise cancellation technology. The earphones support SoundGuard hearing protection technology to prevent sound levels from surpassing 118 dBA and are covered in comfortable leatherette ear cushions for hours of continued use.