Also known as magic mugs, the color changing mug can act as an indicator of water temperature. The mug’s body begins to change color when the temperature reaches 40 ℃, and the color will gradually fade away as the water is getting colder. This patented technology has created unlimited new decoration options in the world of coffee mugs. This color changing mug is patch printable: the black patch is the printable area as well as the color changing area. Print your photo or any image within the area to personalize this color changing mug, and the bordered area will present your art like a magic window or photo frame. Specification Status: on demand Material: ceramic Heating Method: mug press, 180 ℃, & 15 sec. or so
