Wow, a really cool badge designed to grab attention. One of the most brilliant LEDs we have ever seen illuminates the face of this incredible pendant. This amazing eye catcher has 3 illuminated modes: slow flash, fast flash and continuous on. The badge attaches with a locked in pin. This item may cause a small pin hole in the garment to which it is attached. Batteries 2 Pieces AG-3, (replaceable) are included and installed. Complies with CE, CPSIA, C-TPAT. 2" Diameter