Specification :

* BT Version:5.0                                        

* Chipset: JL 6936

* Impedence:32Ω                                          

* Support:HFP,HSP,A2DP

* Max playing time :    About 3-5 hours

* Stand by:180  hours

* Distance <=10M                                         

* Battery Capacity:  40  MAH

* Battery Capacity of charging box: 400mAh

* Speaker:6mm 

*Sensitivity:98dB+/-5dB

*Frequency Range: 20Hz -20KHz