4x M1-S Plus Motorcycle Bluetooth Headset Helmet Intercom 10 Riders 2000m + FM
Bluetooth 5.0 & 2000M Maximum Distance. Bluetooth 5.4 & 2000M Maximum Distance. if you want your trip fill with fun. you must not miss theM1-S Plus. M1-S Plus is equipped withBluetooth 5.0 version, It has high compatibility and stability.