USB Cup Heater Cooler Plate Cup Warmer and Colder Beverage Mug Mat Office Tea Coffee Heater Pad for Coffee Tea Cola Cans…

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Made of high quality materials, heating evenly, safe and durable to use.
Powered by any devices with output 5V USB port, such as your computer, desktop, laptop, tablet, mobile power and so on, easy and convenient.
Light weight and compact size, easy to carry and suitable for most stainless steel cup, feeding bottle, ceramic cup, glass cup, etc.
Keep your coffee, tea or other hot beverage warm up to 50° in winter, cold up to 6 – 8° in summer. do not worry about high temperature and high oxidation, safe in use.
Great for use at home and office, keeping you brew warm or cold.