1.Fountain speaker,great sound. 2.Lingting control, shoot water while playing music; ... USB/SD card/ AUX play; 4.USB charging Fountain mini speaker box Output power:3W Frequency:90Hz-20Hhz Voice dB:<70dB ... Speaker Size:2inch Voltage:5V Muisc input: USB/TF card, Aux ... control Romantic fountain design, great sound quality. Fountain mini speaker box