Inside MP3 player, support SD card,U Disk and MP3.WAV files. ... remote which can control playing the music Electronic plush dog video player (with remote control version) 1,1.5V * 4 AA ... 6V2, built-in 3W dual-channel amplifier3, built-in MP3 player function, support SD card, U disk and other storage ... on the "0-9" digital keys, select the songs. For example, you want to listen to 168 songs, it should ...