ST-LK06-GRN Color: Green Features: -No combination to remember.-No key to lose.-Simply press the card into the side, hear the click and it"s unlocked.-Comes with two cards-one credit card size for wallet or purse, the other attaches to a king ring, always ready when you need it.-Easy to use. Dimensions: -Dimensions: 2.75" H x 1.25" W x 0.12-0.5" D.