... ON/OFF/AUX switch, 3.5mm PHONE jack, 3.5mm audio cable, Vol- button, vol+ button, play/pause button, SD slot, and ... the 3.5mm audio cable, you can play music sourcess from mobile phone, MP3, MP4, PC, etc. This SD Speaker with built in ... , 1000MA Speaker Output: RMS 2.5W THD=10% Frequency response: 150Hz-18000Hz Signal and noise ratio of power amplifier: >/=80dB Audio cable length ...