BT3300 Motorcycle Bluetooth Earset is for full or flip faced helmets and Bike to Bike communications. Do not need two units to function. One unit can be used for hands free cell phone use and or stereo listening.

Whistler BT3300 Motorcycle Bluetooth Earset Earset offers maximum sound efficiency with added usability Compact, exquisite and portable earset Enjoy wireless freedom with BT3300 earset Get rid of the tangles and love your music with these wireless Bluetooth earset Boom microphone is designed in such a manner that it will never miss a word you say Sit comfortably anywhere in your room as the BT3300 offers wireless range of up to 330 ft Noise Cancelling microphone technology enables reliable voice transfer to ensure maximum usability Immense yourself in quality sound with this stereo earset Open form factor ensures maximum comfort and pain, fatigue-free listening