* Switch on/off button: Press once to play music, press again to pause. Motor rotates when music plays and stops when music is paused. * Mode button: Switch between 12 built-in songs. Press the button to cycle through songs; music automatically plays the next song when not manually selected. * Volume selection button: Two buttons with identical function to adjust volume. Each press cycles through high, medium, and low volume levels. * Arbitrary volume control: Unlike traditional baby music boxes with limited volume settings, this crib mobile motor offers stepless volume adjustment from 0 to 100 for optimal sound level. * Soft music: 12 soothing lullabies that can be switched freely. Play one song at a time. Choose your baby's favorite melody to help them fall asleep quickly. * User-friendly design: Automatically shuts down after 30 minutes. * Compatibility: Fits most crib mobile hangers and 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 (other items not included) * Note: Light reflection and display differences may cause slight color variation between image and actual item. Measurement allows an error of +/- 1-3 cm.