I do not like the fact this product does not keep my coffee heated as described. This is the worst purchase I ever made through Amazon. I tried a variety of mugs, and none keeps my coffee warm. I was looking for a auto shutoff warmer; with the large number of reviews and stars, I figure I was making a good choice for the money. I was so excited when it came, now I'm just so disappointed that I wasted my money.I tried positioning my mugs in the middle, closer over here, closer over there, I tried making sure my coffee was hotter then usual when I put it on the warmer, but all I get is room temperature coffee