I've tried the oven only once and had to realize that he has centered the top and bottom, a heating element that automatically turn on and off. Unfortunately, the heat is not distributed evenly in the interior, so that the food is burned in the middle up, while the sides still remain raw. Moreover, it is in the rear area warmer than in the front. So if you turn the food over and over again during the cooking time, then there would be only a small area in the middle which would collect too much heat - but who really likes to remain during cooking by the stove and are fit, that nothing burns .. , So I can unfortunately give the product a 2 star, returns processing Amazon gets full 5 stars!