Specification

Wireless Version:        V5.4

Operation Distance:    10m

Transmitting Power:    class2

Frequency Range:     2.402-2.480 GHz

Speaker:    40mm

Impedance:    32 

TF card Supported:    128M-32G

Radio Frequency Response:    87.5-108MHz

Rechargeable Lithium Battery:   200mAh

Music Playing Time: 8-10h

Talking Time: 6-8h

Charging Time: 2h