Play/Pause Button: Button for play/pause function, press the button to play, then press again to stop playback; the motor operates synchronously with the music: the motor spins when music plays and stops when music pauses. Volume Button: These two buttons have the same function, offering a selection of high/medium/low 3 volume levels. Each press cycles the volume between the 3 levels (high/medium/low) to choose. [Optional Volume] The baby music box has only 3 volume levels. The mobile motor adjusts volume gradually, allowing you to choose the most suitable volume from 0 to 100. [Soft Music] 12 lullabies that can be changed as desired. The last one, a. Your baby's favorite music to fall asleep quickly. [Automatic Shutdown] Automatically turns off after 30 minutes. [Compatibility] Fits most baby swing mobile hangers and mobile arms. [AA Batteries Required] AA batteries are needed, not included. Color: White Material: ABS Dimensions: 14 x 9 x 3.5 cm Packaging Includes: 1 x music box Only the above packaging includes, other products are not included. Note: Light reflection and different screens may cause the color of the object in the image to differ slightly from the actual item. The allowed measurement error is +/- 1-3 cm.