* Switch on/off button: Button for play/pause function. Press once to play music, press again to stop. Motor rotates when music plays and stops when music is paused. * Mode button: Song switching function with 12 built-in melodies. Press the button to switch between songs. Music plays automatically when turned on. * Volume selection button: Two buttons with identical function. Cycle through high, medium, and low volume levels with each press. * Arbitrary volume control: Unlike traditional baby music boxes with fixed volume levels, this crib mobile motor offers stepless volume adjustment from 0 to 100, allowing you to select the ideal volume for your baby. * Soft music: 12 soothing lullabies that can be switched freely. Play one after another or choose a favorite to help your baby fall asleep quickly. * User-friendly design: Automatically shuts down after 30 minutes to conserve battery and prevent overuse. * 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 35 cm * Package Contents: 1 x Music box * Note: Light reflection and differences in display screens may cause slight color variations between the image and the actual item. Measurement error allowed is +/- 1-3 cm.