KKmoon 110V-240V Rechargeable Auto Voice-activated Mini LED Crystal Magic Ball Light Stage Lighting with MP3 Player for Home Party, Bar,Club,Holiday,Show,Karaoke,Christmas(Multi changing Color) Built-in MP3 player and USB port, it can play music in MP3 format from U disk / TF card (U disk and TF card are not included) It is powered by two rechargeable 18650 batteries or AC power adapter Lighting effects, music play and base LED lights can individually work Inner motor rotating, strobe effects, 7 colors change Suitable for Disco, ballroom, KTV, bar, stage, home party, etc