The 14.5 inch LAVA® Lamp is a classic, with slow-moving mesmerizing wax and soft relaxing light contained in a glass globe with an aluminum base and cap. Illuminate your mood as the wax blobs split, collide and ooze their way up and down the trademark-shaped globe for a calming, groovy, flow state of mind. With so many design options to choose from, it is no wonder LAVA Lamp has captivated for nearly 60 years. There is a style to fit every room, mood and personality. Includes 25 Watt light bulb. Plugs into a standard power wall outlet. Schylling 14.5" Original LAVA Lamp, Azure Galaxy - Silver Glitter - 20190400US How does it work? A classic lava lamp contains a standard incandescent or halogen lamp which heats a tall tapered glass bottle.