* Switch on/off button: Press once to play, 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 plays automatically if no input is given. * 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 levels, this crib mobile motor offers seamless volume adjustment from 0 to 100 for personalized sound settings. * Soft music: 12 soothing lullabies可 switched at will. Navigate to previous or next track easily. Choose your baby's favorite melody for a peaceful sleep. * User-friendly design: Automatically shuts down after 30 minutes to conserve power and support sleep routine. * 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 3.5 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.