Health and environmental protection: health and environmental protection: safe and durable non-toxic resin material, made by high temperature resistant standard technology, using the principle of heat sensitivity, even high temperature cooking will not release harmful substances. The operation is simple: you only need to put the timer and the egg into the boiling water, observe the color slowly from red to white, and move from the outside to the center. When the color changes to the extent you need, you can fish out the delicious hot spring egg soft-boiled egg. Ingenious design: our egg timer shows the degree of cooking by absorbing heat and temperature, and the color-changing pattern layer allows you to more easily and intuitively grasp the degree of rawness and ripeness of the food, and it is clear at a glance. Reusable: after using the product, it can be directly rinsed in cold water and dried naturally, which can effectively reduce the cracking, and it is more convenient for the next use to save it carefully. (Recommendation: Hand wash is the best) Kitchen cooking artifact: if you have family or friends who like to use eggs to make food, the egg timer is definitely a practical and creative gift. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.