Take the guessing out of the eggs-asperating work of boiling the perfect egg with this Perfect Color Changing Egg Timer. Simply place the timer in the pot with your eggs and begin to boil. The color-changing interior is specifically designed to indicate when your eggs are soft, medium and hard. Get perfectly prepared eggs no matter the amount of water, the number of eggs, or even the altitude at which you cook. Non-toxic and reusable. Egg timer can be cooled on the counter after use.