portable Mini Speaker of laptop,Support USB and SD card
The first one with moveable charge
The earliest made external batteri

*USB Mini Speaker for laptop, mp3 and mobile phone
*Support SD & TF card
*Stereo sound design, limited space to enjoy unlimited high-fidelity music
*3.5MM headphone output interface,wallyson amplifier.
*Built-in rechargeable lithium battery (standby 240 minutes)
*Size: 25*68*175mm, weight: 0.245kgs
*OEM color and logo print are welcome

 *Output power:3W*2RMS
*Speaker unit:1.5*2(antmagnetic)
*Frequency Response:190Hz-20KHz
*Power Voltage: USB,DC 5V/500mAh
*Distortion: ≤0.5 %( 1W 1KHZ)
*Separation:≥75dB
*S/N Rate: ≥82dB
*Accessories: USB cable, audio cable, battery