Connect up to 6 people, support 2 referees talking at the same time Support 6 riders’ pairing, a host and 5 auxiliaries. Once upon pairing, the host can choose any one of the 5 to talk to. Wireless bluetooth intercom between separate riders at a distance of approx 1200m. 3 Referees Talk at The Same Time (2 V6C + 1 V4C) Three Referees Real-Time Communication After two V6C and one V4C are paired, three people can talk at the same time. The high-fidelity speakers make the sound you hear clear and stable. 2 V6C + 1 V4C Pairing Method With V4C as the center, first use V4C to pair with a V6C, and then use V4C to pair with another V6C to enter intercom mode, and then 3 people can talk at the same time. Package include: 1 x BT intercom. 1 x earphone. 1 x charging cable. 1 x arm bag. 1 x instructions for use Bluetooth Wireless Connection Strong shake stereo music / audio function (using A2DP transmission phone / MP3 / GPS) Standard Bluetooth technology, fully compatible with other Bluetooth devices, such as a Bluetooth mobile phone, MP4 Bluetooth, GPS, Bluetooth, etc Long standby Built-in 850mAh Li-ion battery, up to 12 hours of talking time and 8-10 hours of listen to music, up to 360 hours of standby time. Compact and Lightweight Easy installation and operation, fit for most open-face, flip-front and full-face style helmets, ideal for any motorcycle helmet and skiing helmet, won't damage it.