Wireless Version: 5.0 

Operation Distance: 10m 

Transmitting Power: Class 2 

Frequency Range: 2.402 -2.480 GHz 

Speaker: ?40mm 

TF card Supported: 128M-32G 

Radio Frequency Response: 87.5-108MHz 

Rechargeable Lithium Battery: 200mAh 

Music Playing Time: 5h  Talking Time: 5h Charging Time: 1.5h

We offer a 90 day warranty on all Tools and Accessories.
Please view our Warranty Policy for complete details.