* switch on/off button: button for play/pause function, press the button once to , and then press the button once to stop playing; motor works synchronously with music: motor rotates when playing music, motor stops rotating when music is paused.<br>*Mode button: song switching function, a total of 12 music, each button once to play song; do not press the button music automatically play to song.<br>*Volume selection button: these two buttons have the same function, a total of high / medium / low 3 grades of volume selection, each press the button once the volume will be cycled between the high / medium / low 3 grades to select.<br>[Arbitrary volume]The traditional baby music box has 3 levels volume only.crib mobile motor adopts stepless volume, you can choose the most appropriate volume from 0 to 100. Farewell to the traditional mobile music box.<br>[Soft music]12 lullabys, which can be switched at will. Last one, next one. Choose your baby's favorite music and go to sleep quickly.<br><br>[User friendly design]Automatic shutdown after 30 minutes<br>[Compatibility]Fit most crib mobile hanger,crib mobile arm.2 AA batteries are required, not included.<br>Colour:White<br>Material:ABS<br>Size:14 x 9 x 3.5CM<br><br>Package Contents:<br>1 x musicbox<br><br>Only the above package content, other products are not included.<br>Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.