Cook soft and hard-boiled eggs perfectly every time. The timer sits in the pot with the eggs and changes colour as the eggs cook. Graduated scales show when eggs are soft, medium, or hard by sensing heat instead of time. The sensor accounts for the number of eggs, the amount of water, and even the altitude at which the eggs are being cooked. Soft-boiled eggs are exactly as you like them... every time. Hard-boiled eggs are no longer overcooked, so they have perfectly coloured yolks and a smooth texture. Made in USA.