Keep coffee beans-and more-perfectly fresh with this clever canister. Pleasing curves in matte black stainless steel conceal several mechanisms that ensure freshness. With just the press of a button, an integrated vacuum pump removes air to prevent oxidation. The rechargeable electric canister continually monitors the vacuum level, activating automatically to maintain the proper seal. An airtight silicone ring keeps out odors, moisture and other impurities that might affect the flavor of coffee.