AUTOLOVER 1000M Motorbike Bluetooth Headset, BT-S2 Motorcycle Helmet Intercom Interphone and Audio for MP3 Player/GPS/Walkie-Talkie, Hands Free & FM Radio (Single) Bluetooth intercom:Can talk via Bluetooth intercom function with your 2 or 3 partners freely. (but only 2 riders intercom at the same time) in 800-1000m distance. (For the rider quantity supported, it depends on the walkie talkie itself) Water resistant:No worry any more when driving in the raining day or snowing day.please care for your safe. Advanced Noise Control technology:With technology of DSP echo cancellation and noise control, the high-quality and clear voice can be guaranteed in a high speed riding. Wireless and Wired 2-in-1:2.5mm Audio Socket, answer/reject the phone call, Hands free & FM radio, GPS Voice Navigation, Bluetooth Hands Free, Wireless Streaming, Music(A2DP) Other features:Up to 10 hours talk time when connected to cell phone. Up to 6 hours talk time when using the intercom feature and Up to 300 hours standby. Bluetooth version: 3.0+EDR Wireless headset for Bluetooth enable cell phone at a range of up to 10 meters Bike-to-bike intercom for rider&amp; passenger or two separate bikes up to 800 -1000 meters Up to 10 hours talk time when connected to cell phone Up to 6 hours talk time when using the intercom feature Up to 300 hours standby Call out, call answer, call reject, call hang up. Receive a cell phone call automatically Support audio transfer Support the last number redialing. FM Radio function Enjoy the cell phone music through A2DP or connect GPS Control cell phone music through AVRCP: Forward, backward, play, pause Automatic switching among Bluetooth cell phone, intercom, stereo music With DSP echo cancellation and noise suppression technology, crystal clear voice quality is great in a high speed Button panel is water-proof and sun-proof, while the design is durable Audio cable to connect MP3, GPS, walkie-talkie and so on Working temperature: -30 - 70 Deg.C Powered by built-in 450mAh Li-ion battery