EASY RELEASE BUTTON - When the contents are calling your name, press the button to unlock and bring the air pressure back to normal. 4 L canister holds up to 6 oz of coffee beans, .7 L canister holds up to 10 oz of coffee beans, and 1.2 L canister holds up to 16 oz of coffee beans.

VACUUM SEAL DURATION - Nothing lasts forever - when left unopened Atmos' seal will keep air out for around a week in-between brews. For daily/weekly use, Atmos will extend your coffee's shelf life up to 50% and prevent unwanted moisture and odors.