Phrase peace Easy At a Microwave Oven for Two Boil Eggs Re-277 Made in Japan by (For two eggs) 105x170x110 mm / weight 200g A main part and a lid knob: Polypropylene. A plate and a lid inner side: Aluminum alumite processing. Heat-resistant temperature: 120 . The degree of coldness and warmth-proof: -20 degree. Country of production: Japan.