Eco-Quick Pressure Cooker High quality staniless steel 18/10,SS304 material Triple layer heat-diffusing base Triple safety system 2 cooking level regulators Level I for vegetable & delicate food Level II for meat Pressure : 60/100kPa Safety valve : 120-160kPa Fit for all cooking tops Ergonomics fixed handle Easy open and close system Durable and stylish in use Specail crystal glass know with diamond cut knob The knob is beautiful and functional