American Flag flashing pins are the hottest seller to date. It's one of the most patriotic lights on the site. Attach these flashing pins to tons of soft items: clothes, hats, clothes, hats, patriotic signs, get crafty! To activate your LED Body Light, remove the foam button protector & press the button on back. To attach, American Flag Pins come with military clutch style pin. 2 CR927 batteries are included and replaceable.