vnetphone v6 walkie talkie motorcycle bluetooth3.0 helmet intercom headset 1200m moto wireless bt interphone for 6 riders

brand name:vnetphoneitem type:helmet headsetpower supply mode:built-in batteryconnection mode:bluetoothitem length:8inchexternal testing certification:ceapplicable helmet type:universalspecial features:full duplex real two-way wireless communication for 6 ridersmaximum intercom distance:>1000mmaximum number of speakers:6special function:waterproof,noise reduction,universal pairing functionitem weight:50kg package list ` 2 x v6 bluetooth receiver ` 2 x stereo headphones (3.5mm jack plug) ` 2 x clip & screw ` 2 x screw driver ` 2 x usb cable ` 4 x verclo tape ` 1 x user manual