After 1.8 months the key pad stopped working under less than normal use, microwave oatmeal in the morning and veggies at night. Occasionally warm up lunch when home. No kids in the house, just my wife and me. Warranty is one year. Cost to fix, $300 if I take it out of the wall and deliver to store, $450+ if they come to the house. Heating is power is weak as well. Presetting's for defrost are not good and design of presetting's needs improvement. Unfortunately, Sharp has a patent on this type of unit and it will be good when it runs out so they have some competition. For now, they can get away with poor quality since is it is the only game in town. Consider carefully the design vs the poor quality.