Inovat Black Color Velvet Top Motorized Rotating Display Stand for Jewelry Model Hobby Collectible Product and Other Small Stuff Perfect for display Jewelry, watch, digital product, shampoo, glass, bag, Models, Diecast , Jewelry and Collectibles Diameter of display surface: 8" Use one D battery to supply power(battery is not included) Clockwise and Anti-clockwise are both avaliable 2 types of speed can be selected (high speed 6-8rpm, slow speed 3-4rpm)