LAVA Lamps have continued to captivate for over 50 years. It has one of the most recognized, trademarked shapes of all time. LAVA Lamps produce a soft warm light and mesmerizing visuals of everchanging, moving wax, gently rising up and down. Yellow wax / blue liquid / silver base & cap (okay, we think it looks blue/green rather than blue/yellow). Provides relaxing, soft light. Aluminum base. 25 watt light bulb included. Plugs into a power outlet. Great for room decor and as a stylish night light.