... into a perfect music world.Mini, portable digital speaker for your convenience, connecting to your MP3,MP4, ... GPS, PSP, mobile phone, notebook computer, Hi-fi speaker, U-disk and TF card.Perfect combination of NANO- ... Signal and noise ratio of power amplifier: ≥80DbLoud speaker 1.77 inches (external diameter 45mm) Magnetic resistant ... line-in cable Advanced protable mini speaker box with promotion price