Usage Tips: * Switch on/off button: Button for play/pause function. Press the button to start playing, and press again to stop. Motor operates synchronously with music—rotates during playback and stops when paused. * Mode button: Song switching function. Features 12 built-in songs. Each press cycles to the next song; after the last song, it automatically starts from the beginning. * Volume button: Both buttons perform the same function. Offers 3 volume levels: high, medium, and low. Each press cycles through the levels to select preferred volume. [Adjustable Volume] The baby music box offers 3 volume levels. The crib mobile motor allows smooth volume adjustment from 0 to 100, enabling precise control for optimal sound level. [Soft Music] Includes 12 lullabies that can be switched freely. After the last song, it loops back to the first. Play your baby's favorite melody to help them fall asleep quickly. [User-Friendly Design] Automatically shuts off after 30 minutes to conserve power and support uninterrupted sleep. [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. 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.