Product review (4 stars): Great for purpose, but don't be unrealiastic about its abilities
I like this little guy. I have one in my bathroom to keep cold some medications that I need to take on an empty stomach, and this unit allows me to take them when I get up in the night to go to the bathroom. It is running 24/7 yet only needs to be replaced every 18-24 months, which is pretty darn good for a unit this cheap running all the time!

You folks who are complaining it does not act like a fridge or a stove -- it is not supposed to and the instructions tell you that, very clearly. How much power do you think it gets over a USB link, anyway? It will keep something cold that is already cold and it will keep something hot that is already hot, but it won't make cold something warm nor hot something cold. If you want either of those things, get something purpose built to do it, don't blame the unit.