Dier DK12 800m Helmet Wireless Bluetooth Headset 5.0 Waterproof Double Motorcycle Call Headset With Intercom Function, DK12

Product parameters:
1. BT chipset: 3.0+EDR CSR
2. BT profile: A2DP and AVRCP
3. Battery capacity: 450mAh
4. Charging voltage/current: DC 5V / 160mAh
5. Intercom distance: 800~1000 meters
6. Frequency: 2.4GHz
7. Amplifier: MAX97220A
8. Working time: about 15 hours
9. Mobile phone distance: 50 meters