This handy countertop oven is perfect for warming/baking polymer clays or any craft product requiring heat up to 300 degrees fahrenheit or 149 degrees celsius. It includes a 30 minute timer to prevent over-baking and free projects with the instruction book. Operates on standard household current. Stainless steel. Outer dimensions: 16"W x 8-1/4"H x 10-1/4"D. Inside dimensions: 11" x 7-1/2" x 5 from the tray to the top.