TekkPerry Auto Car Cup Warmer Cooler,Portable Smart 2 in 1 Heating Cooling Cup Can Drinks Holder DC 12V 3A for Water Coffee Milk Beverage for Traveler Road Tripper Outdoors (Without Display)

It cools down my beer really fast 😃 just a test and I’m not DUI. I would like to keep it around especially when I have long distance driving. It also keeps the drink at a pretty decent temp.

Cools my energy drink very slowly because the small can doesn't touch the sides of the can.It does keep the drink cold on a long trip.

Does not work

Warm up coffee

It works with something very thing, a bottle of water would not either heat up or get cold but the liquid into a plastic bag would.

Its good

Too loud to me! I just returned

Well, before summer comes, I like to find stuff to keep my drink cold in driving. This cup holder is very functional to keep drinks cold. The best thing about the product is its digital thermometer. You can easily tell its subject temperature. In order to improve its effectiveness, you can leave some water in the holder. However, when cooling down the drink, the product's mini-compressor creates heat and some noise. the noise does not bother me at all, but I wonder if the heat will damage the car's cup-holding mount, especially in summer. Therefore, my suggestion that when you do not use it, you should unplug the power cord and place the product under the shade. Other than that, I think it is still a good product. :)