Yideng Bluetooth headset for motorcycle helmet Intercom interphone walkie-talkie for Motorcycle Motorbike Skiing GPS FM Radio Voice Command Music Handsfree to 2-3 Riders within 800m 2 Pack Bluetooth Intercom 3.0+EDR: Support high speed up to 120km/h(75mph) in the case of good communication signal,Can talk via Bluetooth intercom function with your 2-3 partners freely,and only 2 riders intercom at the same time. Easy to Install and Excellent Waterproof:Only ensure the position of the receiver and microphone in the helmet, and try to let the receiver close to your ear,No need to worry about the weather,make your outside riding more wonderful. The headset Intercom mode:riders can communicate at a remarkable range of up to 1000m at open ground.DSP echo cancellation and noise suppression technology ensures crystal clear, high-definition audio for an amazing talk or music-listening experience. Powerful Function: When you're riding, you can not only communicate with your friends, but also listen to music, answer or dial the call, GPS, and FM radio, Bluetooth Hands Free and Wireless Streaming Music(A2DP),which make your ride more exciting and interesting. Warranty Period: One year,If you have any question, please contact us in the first time,we are glad to serve you.