GE PSA1200RWW Profile Advantium Oven bakes, grills, and roasts up to 4 times faster than a conventional oven — with no preheating! And it’s also a fully-functioning microwave oven. Advantium technology harnesses the power of light. The outside of the food is cooked like a conventional oven, with radiant heat produced by halogen bulbs above and below the food. This halogen-produced heat receives a boost of microwave energy. The result? Foods brown and cook evenly and fast, while retaining their natural moisture. There are times when almost everyone wishes they had a second oven in their kitchen. Advantium is the perfect second oven for many homes.