... the audio files in SD/MMC card, U disk, mobile phone, MP3, MP4, PC,etc. Support Remote control. SD ... to audio output device: mobile phone, MP3, MP4, PC,etc.Support remote control. Output Power:RMS 6W(3W+3W) ... THD=10%Frequency response:80-18KHZSNR: ≥65dB;Speaker: 2W 4ohm Built-in Li battery ... controller, USB cable, audio cable. wooden speaker for mobile phone, MP3, MP4, PC,etc.