... the fed to infants Product features High temperature prompt functions, when food more than 43 °C temperature, spoon head will become a colorless, ... part of the initial color is red, when the temperature reaches 43 °C, the color will be from red to colorless, ... the original color, and can be repeated use. Specification Temperature range: 338 °C ~ 43 °C Working temperature: 0 °C ~ 100 °C Baby change color ...