Dongguan Mu Bao Electronics Co., Ltd [China]

Charging voltage:MICRO USB 5VWorking current: 10-20mABluetooth Working range: 10M Output power: 2x18mW  Frequency range:  2.401-2.480GHzDistortion factor:≤1%Frequency response:  20Hz-20KHzWorking Time: Music state 10 H/ Talkingstate 15HSNR: S/N≥95Charging Time:  2hSpeaker:  16Ω20mW x 2Battery:  3.7V/195MAH (Polymer rechargeable battery)ANC frequency:100-1000HZANC level :15-20dBStandby time:≥500H