Protable wireless headphone with FM/SD card reader

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 80mA
Charging 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 charging

USBport, USB 1.1
Support file format,MPEG 3
Sampling 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.L
Frequency Response,20Hz - 20 kHz
Channel separate limit, 30 dB at 1 kHz S.P.L
Impedance, 32ohm +/- 10%
Driver Unit, 40mm
Output power,10mW
FM frequency Response,87.5MHz-108MHz