This is a very high tec, very expensive oven. It does have a double convection both in the microwave and in the conventional oven. It heats quickly and the completely stainless steel interior is a plus. The microwave is excellent, very powerful, and can cook a verity of foods, not  just reheat things. Make sure you real ALL the instructions and I suggest getting an extended warranty, because as stated this is a very complex machine, with numerous computers. When, not if, it breaks I am sure it would cost a bundle to fix. Having said all that I am extremely please with this product.