Supports six riders use device, two riders talk at the same time, one main device are pair with 5 sub-devices, the main device can choose one to talk from A/B/C/D/E sub-devices. The main device can not talk with other 5 devices at same time, it is choose one sub-device to talk. Choose from A/B/C/D/E, press main devices MOTER,B,C,D,E button to switch, realize two riders talking. The other five sub-devices cannot talk between with each other.The easy operation to intall it on the helmet provides people with much convenience and have a enjoyful experience when riding.The simple operation to pair with phone could help people with much more convenience in answering the call and listening to music in a much safer way. Providing better riding experience.New technology New panelBluetooth 5.12-way intercom,1 main device can switch 5 sub-devicesIntercom distance 800 metersConnect 2 mobile phonesAutomatically connect to callIntercom time 18 hoursMusic time 25 hoursStandby time 260 hoursWaterproof level IP65Multi-helmet useCharging time :about 3 hoursHeadset distance:10 metersAdvanced noise DSP cancellation