Solarphy Waterproof Motorbike Helmet Intercom 1200M 12 Hours Talk Time Bluetooth Motorcycle Interphone Headset Wireless 6 Riders Walkie Talkie Intercom Communicator Helmet Speakers Headphone (2 Pack) The latest bluetooth technology, used CSRBC5 chip. Up to 12 hours of talk time and 300 hours of standby time on a single charge. Bluetooth intercom for 6 riders. 1200m intercom distance enable you can pair 6 interphones at a same time,and easily switch to any 2 of them. Ultrasonic sealing technology, Strong waterproof performance, No worry any more when driving in the raining day. Advanced DSP noise echo cancellation and control technology cuts down on background noise for both incoming and outgoing audio. Hands-free intercom Headphone for motorcycle, bicycle, Skiing, Hiking, Scooter, Gokart, 4 Wheeler, ATV.