Minilautsprecher mit usb

Mini speaker with usb Function: :1)Support notebook,pc computer, MP3/4 ect media player . 2)The battery could be dismantled at any time 3)It can support any mobile-phone with U disc function,play MP3 format file in the SIM card 4)Free of Remote control 5)portable design,easy to take 6)Support USB device and memory cards,such like SD card MMC ect ,can paly MP3/4file directly. Feature: Color:black Dimension:74mm*74mm*145mm Speaker:50mm Frequency respone::20Hz-20KHz Speaker Impedence:2W+2W SNR:68db Distortion:1% Power Output:2.2W Battery Input voltage:3.7V Battery capacity: Charge voltage: 4.2±0.05V Lithium ion battery input:DC5V Package:90mm*90mm*160mm