Open a wine bottle and it’s a race against time before flavor fades. Unless it has a Steward! The PEK system preserves the original quality of your uncorked wine for up to 2 weeks so you can enjoy delicious wine by the glass. Simply insert an opened bottle in the airtight chamber to fill it with inert Argon gas the same gas used to prevent oxidation in wine barrels. Then either re-cork your bottle or store it in the chamber. Can accommodate oversized bottles. Includes 1 gas cartridges for up to 30 uses. Additional argon cartridges are available. Size: 5-1/2′W x 6-1/2′D x 15-1/2′H Note: Actual life of cartridge will vary depending on the amount of wine left in each bottle being preserved.