* 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 levelshigh, medium, lowwith each press. [Adjustable Volume] Unlike traditional baby music boxes limited to three fixed levels, this crib mobile motor offers seamless volume control from 0 to 100 for personalized sound adjustment. [Soft Music] Features 12 soothing lullabies that can be freely selected. Navigate forward or backward to choose your baby's favorite tune for faster sleep. [User-Friendly Design] Automatically turns off after 30 minutes to conserve power and support uninterrupted rest. [Compatibility] Fits most standard 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 product. Measurement error allowed within +/- 1-3 cm.