The iSimple TranzIt BLU Bluetooth Audio Module is a wireless module that accepts incoming Bluetooth audio stream from Android, iPhone or other devices equipped with Bluetooth audio capabilities. Once the module is paired with your rider’s handset, tablet, etc., audio is then transmitted wirelessly to the module and is then played via RCA stereo outputs, or via FM modulation through the bike’s speakers. This product retails between $120 and $150.