Looking for a functional, yet stylish pen that's small enough to fit on your keychain? With the PicoPen, you'll never be without a pen when you need one. Measuring 3 1/4 inches long and weighing just 1/2 ounce, you'll never know it's there until you reach for it. When you run low on ink, simply refill it with a common replaceable ink refill. Perfect for when you need to quickly jot down a note, sign a document, or even when paying the bill at a restaurant (who knows where that server's pen has been...). Tough yet elegant, you'll get a lifetime of use from this unique personal accessory.