It is a perfect light when you Walking the dog, Cruise, Darkness setting, Evening party activity and other outside sport at night, you can use it to alert the security through the shine. You also can use it for hold your any ID Card and keychain. Whenever day or night can be used. Perfect for party, ID badge holder, Keychain Holder, electronic passes, and USB drives tradeshows, conventions, concerts & more. Turn them on at night they will make it easy to find each other in the crowd. Size 32.28 " x 0.79 "