5.5L pressure cooker with a 3-layer bottom for efficient cooking. Pearl Life Quick Eco 3-layer bottom pressure cooker 5.5L IH compatible 3-layer bottom Quick Eco H-5042 Size (approx.): Overall length 425 x width 250 x height 210mm, Body weight (approx.): 2.7kg Full capacity: 5.5L, Dimensions: 22cm Material: Body/Stainless steel, Base/Aluminum alloy, stainless steel, Lid/Stainless steel, Handle/Phenolic resin (heat resistant temperature 150 degrees Celsius) Country of origin: China Bottom thickness: 4.4mm 3-layer bottom that is suitable for ingredients that easily fall apart, such as fish and vegetables - for ingredients that are difficult to heat through to the core, such as large pieces of meat - and is resistant to burning and has excellent heat retention. Operating pressure: High pressure 100kPa, Low pressure 60kPa The pressure can be switched between low and high pressure in two stages, so you can set it according to the ingredients and cooking method. Compatible with all heat sources For more details, please refer to the following URL: https://www.p-life-house.jp/goods_H-5042.html The Amazon site where it was purchased is as follows: https://www.amazon.co.jp/dp/B006LTDKA6?ref_=ppx_hzod_title_dt_b_fed_asin_title_0_0&th=1 Description of the product from the seller: Purchased on Amazon on November 14, 2022. I don't cook with it much these days, but I remember making a lot of curries and stews when I first bought it. There are no major stains, but I think there is a certain degree of use. Please judge from the photos.