Designed with heavy-duty continuous surface grates, Bosch 30-inch Gas Cooktop can be easily cleaned in the dishwasher. The FlameSelect feature with nine defined power levels enables the users to make precise adjustments to the flame size. Integrated Dual Flame Power Burner with two rings can quickly boil water and maintain a precise simmer with two heat options. Use the OptiSim Burner to simmer your favorite delicate sauces without scorching. Equipped with a Digital Display, it indicates the selected power level and informs you of the burner's residual heat.