... card, play MP3 files. •With Line-in function, as laptop speaker. •Internal rechargeable Lithium battery. Specifications:Out put: RMS 6W(3W + ... 3dB) Signal and noise ratio of power amplifier: =80dB Loud speaker: 1.77" (external diameter 45mm). Magnetic resistant 4Ohms Power ... ,gray,blue, pink, silver, black Features:This mini auto speaker can be deemed as perfect combination of classic and modern ...