Usage Tips: * Switch on/off button: Button for play/pause function. Press the button to start playing, and press again to stop. Motor works synchronously with music: motor rotates when playing music and stops when music is paused. * Mode button: Song switching function with 12 built-in melodies. Each press plays the next song; songs play automatically when started. * Volume button: These two buttons have the same function, allowing adjustment between high, medium, and low volume levels. Each press cycles through the three levels. [Volume Control] The baby music box offers 3 volume levels. The crib mobile motor allows smooth volume adjustment from 0 to 100, enabling you to select the ideal sound level. [Soft Music] Features 12 lullabies that can be switched freely. Plays one song at a time. Help your baby relax and fall asleep quickly. [User-Friendly Design] Automatically shuts off after 30 minutes. [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 Only the above package content is included; other items are not included. Note: Light reflection and differences in display screens may cause slight color variations between the image and the actual item. Measurement allowance is +/- 1-3 cm.