Boiled Egg Timer

It is one of the representative dishes of boiled eggs, but will it be surprisingly difficult to boil eggs? I tried to sandwich it in a sandwich and it was too sticky. Or do you want to make a half-boiled egg like Japanese ramen but it is overcooked, and your mood is cold, This Egg Timer (egg timer) is super convenient. When you boil the egg, you can put it in the pot with the egg and you can know the current degree of cooked egg according to the color of the Egg Timer. The timer senses the temperature instead of time to operate the hard-boiled eggs and half-boiled eggs. It will be free and cooking will no longer fail!