[Prime] Black Bluetooth Smart Wrist Watch Phone Bracelet for IOS Android Samsung iPhone HTC LG
Working current:10-20mA Bluetooth Working range:10M Output power:2x18mW Frequency range: 2.401-2.480GHz Distortion factor:¡Ü1% Frequency response: 20Hz-20KHz Working Time:Music state 10 H/ Talkingstate 15H SNR:S/N¡Ã95 Charging Time:2h Battery: 3.7V/195MAH (Polymer rechargeable battery) ANC frequency : 100-1000HZ