Baby Rotary Mobile Crib Bed Bell Toy Windup Clockwork Movement Music Box with Rotating Hook - Brahms Lullaby Description Features: Dimension: approx. 12cm*7cm*3cm(4.72"*2.75"*1.18") Material: Eco-Friendly ABS and metal music movement inside How to use: the sound power from spring, use the key to turn the spring tightly, then release and will be playing, you can watch our video from gallery pictures. No batteries required, windup movement inside, safe and environmental friendly. Hanging loop at the top, music box can be fixed. Easy to clean, washable with a damp cloth. Product Details: Brand: Pursuestar Mounting Type: Crib Mount Material: Plastic Theme: Music Color: Brahms Lullaby Product Dimensions: 4.72 x 2.76 x 1.18 inches Item Weight: 3.84 ounces Manufacturer: Pursuestar Item model number: SXA-00045 Is Discontinued By Manufacturer: No Assembly required: No Batteries required: No