* Power button: Press once to play/pause music. * Mode button: Switch between 12 built-in lullabies. Press once to advance to the next track. * Volume buttons: Adjust volume across three levels—high, medium, low—with each press cycling through the options. * Adjustable volume: Offers smooth, stepless volume control from 0 to 100 for optimal sound level selection. * Music selection: 12 soothing lullabies, easily switchable with the mode button. * Auto shut-off: Powers down automatically after 30 minutes. * Compatibility: Fits most crib mobile hangers and arms. Requires 2 AA batteries (not included). * Color: White * Material: ABS * Dimensions: 14 x 9 x 3.5 cm * Package includes: 1 x music box * Note: Color may vary slightly due to screen settings and lighting conditions. Measurement tolerance: ±1–3 cm.