* Switch on/off button: Press once to play music, press again to pause. Motor rotates when music plays and stops when paused. * Mode button: Switch between 12 built-in songs. Each press advances to the next song. Music plays automatically from the beginning if no button is pressed. * 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 limited volume settings, this crib mobile motor offers seamless volume adjustment from 0 to 100 for optimal sound level. * Soft music: Features 12 soothing lullabies that can be switched freely. Play one after another or select 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 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 display differences may cause slight color variation between image and actual item. Measurement error allowance: +/- 1-3 cm.