* Switch on/off button: Button for play/pause function. Press the button to start playing, and press again to stop. Motor operates in sync with music: rotates when music plays and stops when music is paused. * Mode button: Allows switching between 12 built-in songs. Each press plays the next song. After the last song, it automatically returns to the first. * Volume button: Two buttons with identical function. Adjust volume across three levels: high, medium, and low. Each press cycles through the levels. * Arbitrary volume: The music box offers 3 volume levels. The crib mobile motor supports continuous volume adjustment from 0 to 100, allowing you to select the ideal volume. * Soft music: Features 12 soothing lullabies that can be switched freely. Play your baby's favorite melody to help them fall asleep quickly. * Baby-friendly design: Automatically turns off after 30 minutes. * Compatibility: Fits most crib mobile hangers and 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 * Note: Light reflection and display differences may cause slight color variation. Measurement tolerance is +/- 1-3 cm.