Manttra Smart pressure cooker is made of mirror polished 18/10 stainless steel, with the capacity of 7.3 liters or 8 quarts. Auto lock system to automatically lock the cooker while you close the lid. New uni-directional pressure regulator for safe release of steam away from you. One touch quick steam release system. 2 pressure high & low settings for cooking convenience. Visual pressure indicator to indicate that the cooker is under pressure. Special euro 3 ply clad base for uniform heat distribution.