VCAN Blinc 136 Flat Black X-Large Full Face Helmet with CRUSADER Graphics Bluetooth 1.2 enabled for cell phone use, music streaming and clear GPS direction Combine 2 helmets for Intercom (rider to passenger and passenger to rider) and 2-way communication (bike to bike up to 30 feet) Waterproof and glove friendly controls with noise cancelling mic Rechargeable lithium Ion battery gives 4 hours of continuous talk time and up to 100 hours on standby and full recharge in just 6 hours with provided charger Flow through ventilation system, anti-scratch visor, removeable and washable liner