Stereo Bluetooth headset with built -in mic
*Comply with bluetooth V4.0+EDR Class II
*Effective range up to 10 meters
*Battery type :75mAh lithium polymer rechargeable battery
*Working time:Music -up to 3-4Hrs and talk -up to 5-6 Hrs.
*Battery charging time :1-2 Hrs.
     Standby time: about 90 hours
*LED Indication :Charging -Red ,Working Blue
*Voice prompt alerts for power ON/OFF & pair
*high quality mic for comfortable conversations
Speaker:
*Driver unit:40mm
*sensitivity:112dB+/-3dB
*Impedance: 32Ohm+-5Ohm
*Frequency response:20Hz-20000Hz
*Maximum Power Input:75mAh
Microphone:
*Driver unit:40mm
* sensitivity:-42±2dB
* Impedance:3.2k Ohm