* anti-slip black velvet top, 360 degree rotating four steel ball bearing, 360 degree rotate more stablely by battery or by ac plug both can rotating automatically on/off switch on the base side * 2 different rotating speed adjustable ,high speed 6-8rpm,slow speed 3-4rpm * ideal for display jewelry, watch, digital product, shampoo, glass, bag... Details: 1.Color: black velvet top + white base 2.360 degree rotate surface 3.Powered: 1x r20/d/1.5v battery or ac plug.(ac plug included) 4.Size:dia.: 8" (20cm top stand)* 2.24"h (include the tray) 5.Material: abs base 6.Loading capacity: 0-2 pounds. Packing include: 1 x rotating display stands,1 x ac power adapter