Customized Keychains & Keylights, Keylight Rectangle - LED & Battery Included, Think outside the box with this rectangle keylight! The rectangle keylight with 1 1/2" chain is one of the most popular key lights in the world with a super bright white LED light. This item has batteries included for added convenience. This keylight is available in a variety of colors and can be customized to your specifications so you can create a unique promotional product. Keylights are a great giveaway for car dealerships and rental companies. ... #KL32 $1.46/each.