Motorcycle Helmets Interphone

Design Product color: Black Efficiency Headset mode: Yes Maximum range: 1500 m Bluetooth version: 4.0 Automatic volume control: Yes Device software updates: Yes Package contents Quick Start more→Guide: Yes Number of pieces: 2 Cables: Charging cable Mounting kit: Yes Battery Battery life: Up to 20 hours Rechargeable battery: Yes Safety warning Warnings Do not use near sources of heat or fire. Keep away from children. Check the condition of the batteries regularly to prevent leakage.