Econoled Tech Battery Color Changing Thermometer Heat Kruzhkus Mug Sensitive Porcelain Tea Coffee Cup Brand:econoLed. Microwave safe. New design, novelty, funny Heat sensitive . NOTE: "Not recommended for use in the dishwasher" Attractive gift box.Porcelain Mug in natural battery electricity grid The item is shipped form US.The shipping time may take 3-5 working days.It's very fast ship