BKoolertron Programmable LED Digital Scrolling Message Name Tag Id Badge(12x48 Pixels) (Blue) ReviewbP PP Koolertron Programmable LED Digital Scrolling Message Name Tag Id Badge(12x48 Pixels) (Blue) PStore up to 8 different messages, 2 logos, and 2000 Characters. Number of English characters not moving: 6PRechargeable battery or run through AC.PProgrammable through your PC on XP, Vista, Windows 7, or Windows 8. Not available for Mac.