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4 in 1 mp3 foldable headphone mp3 headband player support SD/MMC card /FM function
4 in 1 mp3 foldable headphone mp3 headband player support SD/MMC card /FM function

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fashion 4 in 1 mp3 foldable headphone mp3 headband player support SD/MMC card /FM function,enjoy your music

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

USBportUSB 1.1
Support file format MPEG 3
Sampling rate (Bit Rate) 32/44.1/48KHz (8Kbps~320Kbps)
S/N rate About 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

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