* Switch on/off button: Press the button to play, press again to pause. Motor operates in sync with musicrotates during playback and stops when paused. * Mode button: Allows switching between 12 built-in songs. Each press advances to the next song; music automatically plays from the beginning if no input is given. * Volume button: Two buttons with identical function. Cycle through three volume levelshigh, medium, and lowwith each press. * Adjustable volume: Offers 3 fixed volume levels. The crib mobile motor supports continuous volume adjustment from 0 to 100 for optimal sound selection. * Soothing music: Features 12 lullabies that can be freely selected. Plays one song at a time, helping your baby relax and fall asleep. * Baby-friendly design: Automatically shuts down 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 (Other items not included) * Note: Due to lighting and display differences, actual color may vary slightly from the image. Measurement tolerance: +/- 1-3 cm.