After the second machine came, everything excellent. The coffee kept loose 2-3h hot (longer we do not need for our purposes, therefore, not tested)
For those who complain about the bad thermos, complained about the device, because if everything is OK with it, this is really great and lasts a long hot!
By the way: If the coffee is ready cooked, the pot from the machine must be taken out, otherwise they will remain open above (If then quasi to "fill", the part in the middle is pushed down so that the coffee may run into it) and this is pretty much cold quickly.
