Editorial Review:Product Description:This USB-powered mug warmer keeps your flat-bottomed ceramic or metal mug warm at your desk. Keep your coffee or tea hot all morning long. At less than 5 ounces, it's light enough to take with your laptop when you travel.
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Customer Reviews
Average Rating:
-
Convient but not warm enough
Great to tote around in the backback, but when you put an average mug on it, there is usually a rim of ceramic on the bottom of cup. Unfortunately the warmer heats from the center not reaching the outer rim of cup. The result: Coffee does not stay warm.
Rating: 
-
USB Cup warmer
I was VERY disappointed in the product!!! I had ordered 2 thinking one for work & one for home. But in trying the one for work, it did not heat up hardly at all--certainly not enough to keep a cup of coffee warm. My coffee was lukewarm at best!!! I would not recommend the product to anyone. My experience also discouraged a co-worker from giving one to another of our co-workers for Christmas. I have other cup warmers that do heat up beautifully, but they are wearing out & I wanted to replace them. Not with THIS product for sure!!!! Thumbs down!!! Linda, Weatherford TX
Rating: 
-
Good enough
Items arrived quickly and in good condition with no problems. Only caveat was that usage instructions were clearly not written by an English speaker.
Rating: -
Not even luke-warm
This device doesn't do anything to prolong the warmth of your beverage. I started with a hot cup of tea, drank 2/3 of it within the first hour, left for lunch, and my last third was barely over room temperature when I returned.
I repeated the hot fluid level and timing using a coffee mug with a completely flat base (which you won't find on most mugs). Still, slightly above room temp. Cold to the tongue, moderately warm to the hand.
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