[3 modes]crib mobile music box is different from other motors. It has 3 modes, only rotation and only music. Rotation and music at the same time.UNIQUE in the market.[Arbitrary volume]The traditional baby music box has 3 levels volume options only.crib mobile motor adopts stepless volume, you can choose the most appropriate volume from 0 to 100. Farewell to the traditional mobile music box.[Soft music]12 lullabys, which can be switched at will. Last one, one. Choose your baby's favorite music and go to sleep quickly.[User friendly design]Automatic shutdown after 30 minutes[Compatibility]Fit most crib mobile hanger,crib mobile arm.2 AA batteries are required, not included.Colour:WhiteMaterial:ABSSize:14 x 9 x 3.5CMPackage Contents:2 x musicboxOnly 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 a little different from the real thing. The measurement allowed error is +/- 1-3cm.