Well, Thursday I bought it and when I came home I started testing its functions. As you can run it on mains as well as on 12v car lighter plug-in, I started first to test how long time it takes until it reaches 60c., as you can use it also for keeping food hot. After 1 1/2 hour it reached 55c with was good enough in my opinion. After that I switched to cooling mode and found out that after 1 hour the temperature was 20c lower than my environment temperature at the time (how it was promised)
Friday I used it first time on a picnic tour. I run it before I started my trip on mains for one hour and filled it then up with different food from the fridge. After more than 4 hours in a very hot car, standing in full sunshine, the food was still cool when I started the picnic, WITHOUT having used the 12V cigarette lighter socket.!! After 7 hours, coming back home the leftovers in the fridge were still cool enough not to through them away (liver pate...)
So I was very pleased with this buy, for that price...

Max