Battery Cell Type:  A+ Grade lithium polymer battery

Version: 4.0

Capacity: 70mAh

Transmission Range: 10m

Frequency Response: 20HZ-20kHz

Sensitivity : 90±3dB

Impedance: 16Ω±15%

Talk Time: 5hrs

Music Play Time: 4.5hrs

Self-charging Time: 1.5hrs

Function: Support music & make call

Accessories:  Touching sense contactor, user manual

Color