* Power on/off button: play/pause function button, press the button once to play music and then press the button once to stop playing; the motor works synchronously with the music: the motor rotates when the music plays, the motor stops rotating when the music is paused.*Mode button: song change function, one of 12 music, each button once to play the song; do not press the button the music will automatically play to the song.*Volume selection button: these two buttons have the same function, one of high / medium / low 3 volume selections, each press of the button once will switch the volume between the high / medium / low 3 levels to select.[Arbitrary volume]The traditional baby music box only has 3 volume options, the crib mobile motor uses stepless volume, you can choose the most suitable volume from 0 to 100. Say goodbye to the traditional mobile music box.[Soft music]12 lullabies, which can be changed at will. Last, one. Choose your baby's favorite music and fall asleep quickly.[User-friendly design]Automatic shutdown after 30 minutes[Compatibility]Fits most crib mobile hangers, crib mobile arm2 AA batteries required, not included.Color:WhiteMaterial:ABSSize:14 x 9 x 35CMPackage contents:1 x music 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 allowed measurement error is +/- 1-3 cm.