- Sports Bluetooth Headset
- 2017-07-29 22:37
- Model Number: BT-300B Key Specifications/Special Features: Sports Bluetooth headset specification:CSR 8635: V4.1Speaker diameter: Φ40mmSPL: 106dB at 1kHzFrequency response: 20Hz-20000HzSuccessive working time: about 16 hoursBattery: 3.7V/450mAh ...