2.0 портативный динамик

2.0 portable speakerdescriptions: Functions: 1.support Usb,SD card 2.built-in LAN-IN socket,can be connected with MP3,notebook ,MD,CD and other audio devices 3.DC,USB,battery three kinds of power supply 4.built-in 3W big two channels audio circut Paramenters: 1.Output power:3.2W*2RMS 2.Speaker unit:1.5*2(antmagnetic) 3.Frequency Response:150Hz-20KHz 4.Power Voltage: USB,DC 5V/750mAh 5.Distortion: <<0.3 %( 1W 1KHZ) 6.Separation:≥80dB 7.S/N Rate: ≥81dB Accessories: 1.USB power supply cable 2.3.5mm-3.5mm stereo connect cable Package: 1.packing:gift boc+carton box 2.Qty/Carton:55pcs 3.product size:220*40*70(MM)