... you into a perfect music world.l Mini, portable digital speaker for your convenience, connecting to your MP3,MP4, CD, DVD ... , iPod, iPhone, GPS, PSP, mobile phone, notebook computer, Hi-fi speaker, U-disk and TF card.l Perfect combination of NANO ... )l Signal and noise ratio of power amplifier: ≥80Dbl Loud speaker 1.77 inches (external diameter 45mm) Magnetic resistant 4Ohmsl Power ...