INTERPHONE TOUR HD motorcycle intercom, set for 1 helmet

Design Product color: Black Efficiency Automatic volume control: Yes Headset mode: Yes Maximum range: 1500 m Device software updates: Yes Bluetooth version: 4.0 Package contents Quick Start Guide: Yes Cables: Charging cable Number of pieces: 1 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.