FEATURE:
1. Sound by professional tuner deployment
2. NFC Function (can choose)
3. Head band are flexible
4. Built- in mic for calling
5. Compatible with most smart Bluetooth devices
SPECIFICATION:
1. Bluetooth specification: V5.0
2. Battery:3.7V /400mAh
3. Play Time:20H
4. Charging Time: 4H
5. Standby Time: about 400H
6. Product size:185*185*7 mm
7. Net weight:252g
8. Wireless Range:10M (without obstacles)
9. Speaker: ø40MM
10. Speaker sensitivity: 111 +/- 3db at 1KHz;1mW
11. Impedance: 32Ω +/- 15%
12. Speaker frequency : 20Hz-20KHz
13.Input voltage / current : DC 5V/200mA
