1Single Chamber: The capacity is equivalent to an AA battery. Only single chamber but enough to hold your 1 day vitamins or medicine. 2Super Sealed: Keychain medication box is airtight, which prevents any leaks or damage to your medication, ensuring worry free portability and peace of mind. 3Stainless Steel Material: This small medicine holder is made of stainless steel, virtually indestructible, securely protect medication. 4Versatile Usage: In addition to storing medication, this container can also be used for storing small beads or spices, providing added convenience to your daily life. 5Portable And Fashional Design: with keychain, this mini case fits in your pocket, purse,bag. It's a compact ideal to taking it wherever you go.