The Frigidaire Professional 30″Microwave Combination Oven with Total Convection, features our most powerful and advanced convection system, which enables cooking modes like No Preheat, Air Fry, Slow Cook, Steam Bake, Steam Roast, Air Sous Vide, Convection Roast, Convection Bake, Bread Proof and more! Plus the microwave features Convection cooking, which delivers the great tasting results of a convection oven, but combined with the speed of a microwave.