Its chamber-vacuuming system allows liquids to be sealed cleanly inside the bag, virtually eliminating partial and failed seams. This machine also reaches a whopping 29.7"Hg level of vacuum, while most other suction-system machines deliver only 24" to 26"Hg vacuum. This fully automatic machine has a digital control panel, removable 10" seal bar and a see-through lid. It's made of easy-to-clean stainless steel.