* On/Off Button: Button for playback/pause function, press the button once to play music, then press the button once to stop playback; the motor works synchronously with the music: the motor rotates when music is playing, the motor stops rotating when music is paused. * Mode Button: Song switching function, a total of 12 songs, each press once to play the song; do not press the button, music will automatically play to the song. * Volume Roller Button: These two buttons have the same function, a total of high/medium/low 3 volume selection, each press once the volume will cycle between the high/medium/low 3 levels to choose. [Arbitrary Volume] The traditional baby music box only has 3 levels of volume options, the crib mobile motor adopts stepless volume, you can choose the most suitable volume from 0 to 100. Say goodbye to the traditional mobile music box. [Soft Music] 12 lullabies, which can be switched at will. Last, one. Choose your baby's favorite music and fall asleep quickly. [User-Friendly Design] Automatic shutdown after 30 minutes. [Compatibility] Fits most crib mobile hangers, crib mobile arms. Requires 2 AA batteries, not included. Color: White. Material: ABS. Size: 14 x 9 x 35CM. Package Contents: 1 x Music Box. Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture to be slightly different from the real one. The allowed measurement error is +/- 1-3 cm.