Polished stainless steel with welded joints for durability, and easy cleaning. Non-drip tap, plus heat resistant lid knob . Just add cold water and fresh coffee grinds to hold up to 55 cups of coffee. The red switch indicator light shows whilst brewing is in progress. A second indicator light shows when coffee is ready to serve. Once brewed the heat automatically reduces and maintains an ideal serving temperature Urn is 292mm dia. and 420mm high. Electricial supply is 230V, 50Hz. Element is 1650 watt.