* On/Off Button: Button for play/pause function, press the button once to play music and then press the button once to stop playback; the motor works synchronously with music: the motor rotates when music is played, the motor stops rotating when the music is paused. * Mode Button: Song change function, one of 12 music, each press of the button once to play the song; do not press the button, music is automatically played to the song. * Volume Roller Button: These two buttons have the same function, one with high/medium/low 3 levels of volume selection, each press of the button when the volume is switched between high/medium/low 3 degrees to choose. [Adjustable Volume] The traditional baby crib mobile motor has 3 levels of volume options only, 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. [Soothing Music] 12 lullabies, which can be switched at will. The last one. Choose your baby's favorite music and go to sleep quickly. [User-friendly Design] Automatic shutdown after 30 minutes [Compatibility] Fits most cribs, mobile cribs, 2 AA batteries required, not included. Color: White Material: ABS Size: 14 x 9 x 3.5CM 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 thing. The allowed measurement error is +/- 1-3 cm.