[3 Modes] This crib mobile music box is different from other motors. It has 3 modes: rotation only, music only. Rotation and music simultaneously. UNIQUE on the market. [Arbitrary Volume] The traditional baby music box has only 3 volume levels. This crib mobile motor adopts stepless volume control, allowing you to choose the most suitable volume from 0 to 100. Say goodbye to the traditional mobile music box. [Soft Music] Features 12 lullabies that can be switched at will. Finally, choose your baby's favorite music and help them fall asleep quickly. [User-friendly Design] Automatic shut-off after 30 minutes. [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: 2 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.