This fake egg changes colors along a heat-sensitive gradient to let you know when the real eggs you're boiling have reached the ideal temperature. Durable and endlessly reusable with easy-read black markings, this color-changing timer lets you know at a glance when to remove your soft, medium or hard-boiled eggs from the stovetop. Unlike standard countertop timers, this one goes "in the field" to do its research and guarantees a perfect result.