Mini Digital Sound box , laptop speaker, SD card speaker 1.manufacturer with reasonable price 2.Built lithiumbatter promotional ... , China (Mainland)ColorBlack, silver, blue, yellow,purple, pink Market Worldwide Sound Quality FineManufacture yesOutput(RMS) 3W, THD=10%Signal-to-Noise ... package quantity: 100 setsWhole weight: 15.5 Kgs Mini Digital Sound box , laptop speaker, SD card speaker