Bullet Point: Principle: The scale measures the heat to show when the egg is in a soft, medium or solid state. Convenient and fast: You can intuitively observe the size of the red area to determine the state of the egg yolk, according to your preference to choose the time to turn off the fire. Safety: Made of environmentally friendly resin material, non-toxic and harmless, you can safely use the egg with the pot. Wide range of uses: Suitable for home, kitchen, hotel use. Note: The egg timer can be used after cooling on the counter, do not immerse the timer in cold water. Specifications: Size: 5.7*4cm/2.24*1.57inch (Approx.) Weight: about 62g Material: Resin Application: Egg timer, intuitive observation of egg yolk solidification. Package Includes: 1 x Egg Timer This is color changing egg timer The scale measures the heat to show when the egg is in a soft, medium or solid state You can intuitively observe the size of the red area to determine the state of the egg yolk, according to your preference to choose the time to turn off the fire The egg timer can be used after cooling on the counter, do not immerse the timer in cold water