Specifications
Bluetooth Version V3.0
Bluetooth Profile HSP/HDP/A2DP/AVRCP
Bluetooth Chipset JIELI 4602A
Input 3.7V
Output 2x10mW
Impedance 32Ω
Speaker Frequency  20Hz ~ 20KHz
Mic Sensitivity -38dB ± -3dB
Charging Time ~2 Hours
Playing Time ~6 Hours
Battery Capcity 300mAh