Welcome to the store! * On/Off Button: Play/pause function button. Press once to play, and press again to pause; the motor operates synchronously with the music: the motor rotates when music plays, and stops when music is paused. * Mode Button: Song switching function. There are 12 songs in total; each press plays one song. If the button is not pressed, the music will automatically cycle through the songs. * Volume Dial Button: These two buttons have the same function, offering 3 volume levels: High/Medium/Low. Each press cycles through these 3 levels. [Optional Volume] Unlike traditional baby music boxes with fixed volume levels, this crib mobile motor features stepless volume adjustment, allowing you to select the perfect volume from 0 to 100. Say goodbye to the limitations of traditional mobile music boxes. [Soft Music] Enjoy 12 lullabies that can be switched at will. Skip to the previous or next song. Choose your baby's favorite music to help them fall asleep quickly. [User-Friendly Design] Automatic shut-off after 30 minutes. [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 Only the above package content is included; other products are not. Note: Light reflections and different displays may cause the color of the item in the picture to differ slightly from the real item. The allowed measurement error is +/- 1-3 cm. Your satisfaction is our top priority. We will provide you with the best service. If you encounter any problems after receiving the product, such as damage, incorrect quantity, etc., please contact us immediately, and we will provide you with the best solution!