Have this equipment after a long search found and bought. The results of the tests I can only confirm. We have had the Box 5 weeks time at the tent holiday and at temperatures up to 40 ° C in use. The box cools even then the food and drinks to temperatures, which is yet to be the butter and chocolate. We can go through the box at night in the tent and could sleep well, because the box regulates the fan itself, ie it is cool, then the fan spins barely. If you press the Boost button, then it cools more quickly but is also heard when you sit near the box, but the sound goes into the sounds of the campground by the day. I welcome also the cables disappear both 230V and 12V car behind a small sliding hatch and they are both always connected, because we all cables has thereby without Extrakruschtel. The capacity is sufficient for food for one or 2 families. When one brings drinks, then reaches incl. Drinks for a family.
We can only recommend the box, because all their predecessors (other brands), which we used, were in the cooling capacity and the sounds many times worse.
Thanks EZetil, the box has enriched our tent vacation real!