Vacuuming device up to 30 cm foil width keeps things up to 6 times fresher protects vitamins aromas and colours extra strong welded seam protects against freezer burns 170 watt free 5 bags 22 x 30 cm the fully automated professional vacuuming device will keep foods fresh for up to 6 times as long 11 litre minute powerful vacuum removes up to 90 of the air which will not enable the bacteria to survive extra strong welded seam which will protect the food against freezer bu