The unit conforms to the property to the TCM. Double weld, simple pressure on the lid on one side and the air is sucked out, press on both ends of the cover and it is welded. Done.
The exhaust air from the freezer bag film is good. Better like the TCM. Quick and the air goes when the bag is kept accurate, complete and well out.
And then: you can use normal freezer bag (Top It, etc.) and does not require special and expensive Folien.Bestron DBS827 Sealer