Myya USB Hot and Cold Cooling and Heating Coaster Dual-Purpose Warmer Insulation Cup Coffee Tea Beverage Can Heater Refrigeration Coaster

❃[Cold and hot dual purpose]: This product not only has the function of heat preservation, but also has the function of rapid cooling, achieving a dual purpose. Semiconductor refrigeration chip, low power consumption, long-lasting durability, improve heat preservation / cold preservation speed. ❃[Easy Operation]: The device has two touch buttons, namely cooling and heat preservation, one-button start ❃[USB power supply]: USB power supply can be connected to a suitable power supply, notebook, charger, convenient and fast. ❃[Waterproof]: High-quality ABS engineering plastic shell, anti-leakage, safe and secure. ❃[Cup type]: Suitable for most flat-bottomed cups and beverage fillings on the market, support cans, ceramic cups, glass cups, stainless steel cups, etc. (Note: Plastic cups, double-layer cups, thickened bottom cups and flat bottoms are not suitable Pot. The function of this product is to keep warm and constant temperature. It cannot be used to boil water), Manufacturer: Myya