* 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.*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.*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.Arbitrary volumeThe 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.Soft music12 lullabys, which can be switched at will. Last one, one. Choose your baby's favorite music and go to sleep quickly.User friendly designAutomatic shutdown after 30 minutesCompatibilityFit most crib mobile hanger,crib mobile arm.2 AA batteries are required, not included.Colour:WhiteMaterial:ABSSize:14 x 9 x 3.5CMPackage Contents:1 x musicboxOnly the above package content, other products are not included.ote: 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.