The EuroSealer provides an inexpensive and easy way to perfectly reseal unused portions of food in seconds. Re-Seal Bags to save Freshness. Just run this hand-held sealer along the edge of any open plastic bag to create an airtight seal. Re-seal big bags again and again. Magnetic back lets you store it in a convenient location. Also features a unique bag opener that opens bags neatly. Uses two AA batteries (not included).