The Presto 4-Quart Pressure Cooker's pressure regulator automatically maintains the proper cooking temperature, while the cover lock indicator shows when there is pressure inside. Made from durable, polished aluminum, this pressure cooker ensures quick, even heating and is easy to clean for long-lasting use. Features and Specifications: - Foods cook 3 to 10X faster than ordinary cooking methods, saving time, energy, and money - Strong, heavy-gauge aluminum for quick, even heating, easy cleaning and long life - The pressure regulator maintains the proper cooking pressure automatically - The smart choice for preparing today's lower calorie foods - Pressure cooking preserves flavors and nutrients and even tenderizes lean cuts of meat - Works on electric, smooth top, and gas ranges - Fully immersible and dishwasher-safe with the sealing ring and over-pressure plug removed