Morningware Halo Oven Deluxe Worldwide patented 4 ways cooking technology - conduction, convection, halogen, and infrared technology 50-percent faster and 85-percent more energy efficient than conventional ovens No need to preheat or defrost, odorless, smokeless. temperature setting from 185f to 400f All dishwasher safe except a powerhead. Cook up to 23LBS turkey with an extender ring Digital powerhead, duo leveled wire rack, tempered glass tray, fda proved plastic dome, laminated cooking chart, recipe book included