I bought the "refrigerator" for the school, because it was constantly very hot and the drinks hence. I've tried it right after delivery and it works, but takes time (15min). It is extremely dependent on the outside temperature, if it is cooled properly and how long it takes until you can use it. In addition, there is very little cool in my opinion, in the interior, but it cools the identification plate on the bottom metal leaf dataufstehende the wall outlet (plastic it works so hard). That's why the "fridge" is also not particularly isolated, and anything not touched the plate, is not cold. Cool gadget especially for school, but because it has limited internal capacity (a 0.33 box), and you never know if it cools / how long it takes ....... I give 3 stars.