Stackable to increase throughput and save valuable counter space. Seafood and proteins are tender and thoroughly cooked, never chewy or rubbery. Vegetable are crisp and colorful, never limp or soggy. Easy and safe operation. Pull down door design allows for easy removal of pans. Waterless steaming, no plumbing required. Accepts standard USB flash drives. Simple programming, easily program multiple ovens. Automatic voltage sensor for easy installation. 11 power levels for consistent, delicious results for frozen, refrigerated and fresh foods, from freezer to table in minutes.