To wear your badge and look really hip - Get a light up lanyard for a badge or key clip. They can hold badges or keys as their loads and the lights can be set to three different modes. Just press the button - it takes no skill - use fast flash or slow flash or set it for still. This lanyard is perfect for any to grasp. One size fits all since it has a great clasp. LED Colors: 8 Blue - Batteries: Batteries for this item are included but NOT replaceable.