motorcycle bluetooth intercom, fodsports m1s pro 2000m 8 riders group motorbike helmet communication system headset universal wireless interphone (waterproof/handsfree/stereo music/gps/2 pack) fodsports <p> <b> motorcycle helmet intercom feature </b> <br> 1)power detection function, low power notification: <br> recorded voice message will tell you. power over 90%, power over 50%, power below 50%, power below 10% please charge immediately. <br> can be used while charging to ensure long-distance travel. </p> <p> 2) crystal clear sound quality <br> - adopts 30mm speaker providing a high quality full range of sounds<br> - adopts cvc tech reduces noise for both incoming and outgoing audio.</p> <p>3) bluetooth communication protocol: hsp, hfp, a2dp, avrcp, spp, cvc <br> driving distance: 500 meters (for two riders), 2000 meters (for groups) </p> <p> 4) excellent design: like the concave-convex interface suitable for blind operation. <br> for hands-free calls, one button to answer/hangup/refuse/redial calls . <br> for enjoy music, easy to play / pause / back / continue </p> <p> 5) full duplex 8-way intercom group with self-healing technology. <br> if one rider leaves group less than 5 minuts, can rejoin riding group seamlessly. if more than 5 minuts, just one-button to rejoin and stay connection easily. </p> <p> <b> motorcycle headset specification </b> <br> - bluetooth version: 4.1 <br> - battery type: rechargeable lithium polymer 900mah <br> - standby time: about one week <br> - operating time: 20 hours <br> - charging time: 3 hours <br> - power adaptor: dc5v 500ma </p> <p> <b>motorcycle interphone package included</b> <br> 2 × m1-s pro<br> 2 × speaker and hard microphone<br> 2 × soft microphone<br> 2 × 2.5mm to 3.5mm cable<br> 2 × velco<br> 2 × metal clip<br> 4 × eva rubber<br>2 × helmet bracket <br> 2 × usb cable<br> 1 × user manual</p> <p> <b> motorcycle headset customer service </b> <br> this bluetooth helmet intercom includes a 30-day money back guarantee and a 12-month customer service guarantee. please contact us if you have any problem. </p>