* 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 tracks; music plays automatically if no input is given. * Volume selection button: Two buttons with identical function. Cycle through three volume levels—high, medium, low—with each press. * Stepless volume control: Offers adjustable volume from 0 to 100 for customized sound output, moving beyond traditional fixed-level music boxes. * Soft music: 12 soothing lullabies可切换 at will. Navigate previous or next track to find your baby’s favorite melody for quick and calm sleep. * User-friendly design: Automatically shuts down after 30 minutes to conserve power and support uninterrupted rest. * 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 variations between image and actual item. Measurement error allowance: +/- 1-3 cm.