Cobra BT200 Water/UV/Dust/ Vibration Proof Handset with Bluetooth Wireless Technology Great for use with the Bluetooth enabled cell phone on your utility vehicle or machinery Dust, Vibration, UV, Mud, and Water Proof NO Recharging required Noise cancelling mic allows for loud, crystal clear calls over the noise of your vehicle or machinery Pairs easily with up to 8 different cell phone (used one at a time)