Cyclonic Inverter Technology evenly circulates heat in 3D waves for more even, efficient cooking with delicious results 14 Preset Auto Cook Menu Items, 15' turntable; Delay Start and Timer; More/Less Control; Quick Minute, Popcorn Key Smart, compact design devotes less space to electronics and far more interior capacity Inverter turbo defrost thaws foods more evenly and quickly Keep Warm feature keeps foods like vegetables, soups, hors d'oeuvres, gravies, sauces and desserts warm and delicious in the oven until they're ready to serve