* Switch on/off button: Button for play/pause function. Press the button to start playing; motor works synchronously with music. Motor rotates when playing music and stops when music is paused. * Mode button: Song switching function with 12 built-in melodies. Each press of the button plays the next song. Music automatically starts from the beginning when the cycle ends. * Volume button: Two buttons with the same function to adjust volume. Three volume levels: high, medium, and low. Each press cycles through the levels to select desired volume. * Arbitrary volume: The music box offers three fixed volume levels. The crib mobile motor supports continuous volume adjustment from 0 to 100, allowing you to set the ideal volume. * Soft music: 12 lullabies that can be switched freely. Play one at a time. Soothe your baby with favorite melodies to help them fall asleep quickly. * Baby-friendly design: Automatically shuts off 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 items are not included. Note: Light reflection and differences in display screens may cause slight color variations between the image and the actual item. Measurement allowance is +/- 1-3 cm.