... looks to me like the large container is the size of a loaf of bread, and the small container is the size of a sandwich.
This seems to be a next evolutionary step technology. I've used those "Seal-A-Meal" whatsits with the hot wire and bags and the sucker things that try to vacuum out your Tupperware, and they're rather... irritating. This is going, "That's a good idea. How about doing it not-stupid?"
Risk of first generation tech being crappy is kind of high here. Failing seals and electronics are common in primary runs. On the other hand, these folks appear German; German engineering I trust. Besides, this looks like something I want to encourage.
Guess I'll bite. Fresh-made sandwiches are good, but not so good 5 hours later when you fetch them from the office refrigerator. This interests me.