Brighten your crystal memory with a LED Light Base. Operates by Batteries or USB Power Cable. USB Power Cable can be plugged into any USB Port (included) Batteries (3AA Not Included) USB Outlet Adapter Output: 5.0V ~1A (not Included) Fits The Following Crystals: ■ Small Cube - Portrait ■ Small Cube - Landscape ■ Medium Cube - Portrait ♦ Small Diamond ♦ Medium Diamond ♦ Large Diamond ♥ Small Heart ♥ Medium Heart ♥ Large Heart ♠ Small Prestige ♠ Large Prestige ♠ X-Large Prestige