1x 1000m Motorcycle Bluetooth BT Handsfree Cell Phone Multi Helmet Biker to Biker Motorcyclists Intercom Interphone MP3 Stereo Ear Phone Microphone Headsets This headset works with any Bluetooth equipped mobile phone This device allows bikers to receive GPS voice instructions, communicate with the passenger on the back seat Bike-to-bike intercom for rider& passenger or two separate bikes up to 1000 meters With DSP echo cancellation and noise suppression technology, crystal clear voice quality is guaranteed in a high speed Button panel is water-proof and sun-proof, while the design is durable