Protable Wireless Headphone With FM/SD Card Reader

Brand Name: Neutral Model Number: KT-HE029 Style: Headband Communication: Wireless Connectors: 3.5mm Use: Portable Media Player Function: Bluetooth,Waterproof,Noise Cancelling Place of Origin: Guangdong China (Mainland) Color: White & Black Packaging & Delivery Packaging Detail: neutral color box Delivery Detail: 15-25days Specifications 1.Audio transfer cable with microphone 1pc 2.USB charging cable 1pc  1.Audio transfer cable with microphone 1pc                          2.USB charging cable 1pc                                                     3.F card transfer to SD card cover 1 PC Power supply3.7V(3.7V 500mAH  LI-ION charging battery)Static state electric current less than 40uA.Operation electric current when headphone output less than 80mACharging use computer USB port , the maximal charge electric current 200mA.Put earphone into the socket and listen music stored in MMC/SD card.USB input port is responsible for battery chargingUSBport, USB 1.1Support file format,MPEG 3Sampling rate,(Bit Rate) 32/44.1/48KHz (8Kbps~320Kbps)S/N rate, bout 70dB (1 kHz)Sensitivity,108+/- 3 dB at 1 kHz S.P.LFrequency Response,20Hz - 20 kHzChannel separate limit, 30 dB at 1 kHz S.P.LImpedance, 32ohm +/- 10%Driver Unit, 40mmOutput power,10mWFM frequency Response,87.5MHz-108MHz