This device allows bikers to receive GPS voice instructions, communicate with the passenger on the back seat, to conduct calls on their mobile phone and listen to music or their MP3 player. Last but not least, the device offers biker-to-biker intercom communication. This headset works with any Bluetooth equipped mobile phone. Designed and Engineered for Heavy-Duty Performance; Can be realized Bluetooth helmet headset with helmet headset 500 meters of direct full-duplex intercom; Talking time 8 hours, standby 300 hours. Built-in FM radio.