mini loudspeaker box 1.portable speaker 2.mini Stereo speaker with MP3 player 3.factory good price mini loudspeaker box ... 3W*2 Frequency Response 200Hz ~ 18KHz Signal-to-Noise ≥85dB speaker unit 2 Battery Charging Voltage3.7~5V Power Supply Input ... 5. easy to carry 6. Blackouts memory played 1,Mini portable, with high quality aluminum case, fashional, engrossing,elegant2,support format ...