Having a Domo, I wanted to give my mother this type of device for Mothers Day 2011. I found in the trade model. The brand known reassured me in my choice. But what a disappointment ... this machine DO NOT EMPTY THE AIR, IT DOES NOT THE ASPIRE, the bag is not stuck on your food when the operation is over, nothing like that. It is a vulgar welder, nothing more. I was extremely disappointed. Thank you to amend the specification of the device, it does not extract the air, or make a vacuum. My review will help future buyers to look elsewhere !!!