This egg cooker is kind of class. Easy to use and reliable result. The eggs always have the right consistency. Read the desired hardness and eggs number with the measuring cup and the eggs are perfectly cooked. We always take a finger's breadth more water as indicated on the measuring cup and have a super consistent results. My previous egg boiler was the same brand, he has done 30 years good service. I assume that this will keep as long. We recommend.