Unique Noisebuster headset eliminates background noise when used with cell or portable phones. Will work with any cell or portable phone which uses a 2.5mm standard earphone jack. Eliminates wind noise, tire noise, engine noise, machinery noise, etc. An exceptional value - unit features low cost battery operation , fully adjustable boom microphone, adjustable headband, padded earphone and belt clip equipped control. Can also be used without the noise cancellation feature in the event of battery failure. Operates on 2 AAA batteries (not supplied). TS065 - 100 in stock