* Switch on/off button: Button for play/pause function. Press the button to start playing, and press again to stop. Motor works synchronously with music: motor rotates when playing music and stops when paused. * Mode button: Song switching function with a selection of 12 built-in melodies. Each press plays the next song; music automatically plays the next track without button input. * Volume button: These two buttons have the same function, offering high, medium, and low volume levels. Each press cycles through the three levels to select desired volume. * Arbitrary volume: The baby music box offers 3 volume levels. The crib mobile motor supports stepless volume control, allowing adjustment from 0 to 100 for optimal sound. * Soft music: 12 lullabies that can be switched freely. Plays one song at a time. Soothe your baby with gentle melodies to help them fall asleep quickly. * Baby-friendly design: Automatically shuts down after 30 minutes. * Compatibility: Fits most crib mobile hangers and crib mobile arms. Requires 2 AA batteries (not included). * Color: White * Material: ABS * Size: 14 x 9 x 3.5 cm * Package Contents: 1 x Music box Only the above package content is included; other products are not included. * Note: Light reflection and differences in display screens may cause slight color variations between the image and the actual item. Measurement error allowance is +/- 1-3 cm.