... into a perfect music world.l Mini, portable digital speaker for your convenience, connecting to your MP3,MP4, CD ... GPS, PSP, mobile phone, notebook computer, Hi-fi speaker, U-disk and TF card.l Perfect combination of NANO ... Signal and noise ratio of power amplifier: ≥80Dbl Loud speaker 1.77 inches (external diameter 45mm) Magnetic resistant ... *35*31cm 2013 new promotional card mini speaker with computer