Personal SD Card MP3 Player Headphone

SD card MP3 player headphone
As MP3 Micro SD card headphone
As FM radio
As Multimedia computer headphone

Support file format: MP3
Communication protocols: USB2.0
Frequency response: 20-20kHz
SNR: About 75dB (1kHz)
FM frequency range: 87.5MHz-108MHz
Extermal power supply: USB5V/350mA
Recharge time: 3 hours
Battery life(full): Approx 8 hours