On/Off button button for play/pause function, press the button once to play music, then press the button once to stop playing, the motor works synchronously with the music, the motor rotates when the music is played, the motor stops rotating when the music is paused. Mode button song switching function, a selection of 12 songs, press the button once to play the song, if you do not press the button, the music will automatically play to the song. Volume selection button these two buttons have the same function, a selection of highmediumlow 3 volume levels, each time you press the button the volume will cycle between the highmediumlow 3 levels to choose.Optional volumeThe traditional baby music box only has 3 volume levels, the crib mobile motor has stepless volume, you can choose the most suitable volume from 0 to 100. Say goodbye to the traditional mobile music box.Soft music12 lullabies, which can be switched at will. Last, one. Choose your babys favorite music and fall asleep quickly.Userfriendly designAutomatic shutdown after 30 minutesCompatibilityFits most crib mobile hangers, crib mobile arm2 AA batteries required, not included.Color WhiteMaterial ABSSize 14935CMPackage Contents1music boxOnly the above package content, other products are not included.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 is13 cm.