Whether you need people to see you or you just need to see where the keyhole is, the Nite Ize ClipLit is a cute, convenient way to light up your life. Attach it to your backpack, purse, keys, zipper, or yourself, and you'll always have light when you need it. Compact, convenient illumination with a secure clip so you can clip it anywhere. Simple twist onoff. Easily replaceable CR 927 3V Lithium battery included lasts 24 hr.. Weather resistant. Comes in a variety of fun designs. Weighs only 0.18 oz.. Dimensions: 1.7 x 1 x 0.5 in.. Due to federal shipping restrictions regarding products containing lithium batteries, this product can only be shipped to the 48 contiguous states. It cannot be shipped to Canada, Hawaii, Alaska, Catalina Island, Puerto Rico, APO, FPO or international addresses. Thanks for your understanding.