Specification

Wireless Version:        5.3

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:400mAh

Music Playing Time: 14-18h

Talking Time: 14h

Charging Time: 3h