【Long Communication Range】 The largest distance between two Motorcycle Bluetooth Headset is up to 1.2km/1312yard in open terrain, the intercom attached outside the helmet could stay tight with a metal clip. | 【Excellent Noice Control】 Wind noise DSP cancellation guarantees crystal clear voice and reduces background noise from both incoming and outgoing audio. It has a waterproof case, don't worry about riding in the small rain. | 【6 Riders and More powerful】 V6Pro helmet headset intercom with upgraded power capacity 850mAh(530mAh of V6), supporting up to 6 riders, a host, and 5 auxiliaries. A host can choose any one of the 5 to talk, up to 8 hours of talk time, and 300 hours of standby time for a single full charge. | 【Convenience of using】Auto-receiving cell phone calls, Automatic switching among Bluetooth cell phones, intercom, and stereo music; you can enjoy the music or answer/reject the phone call easily. This Interphone could be also applied to mountain climbing, cycling, skiing, etc. | 【Multiple Usage 】This Motorcycle helmet intercom Can be used in busy places, such as mountain climbing, cycling, skiing, concerts, stadiums, port command, command, etc. It also can be used as a gift for friends' birthdays, Thanksgiving, Christmas, and New year.