Elektro Lumens’ “Blaster” series flashlights use a high-flux LED made by Lumileds. The “Luxeon Star” LED, in combination with Elektro Lumens’ custom-designed 30mm collimating optics, offers a light as bright as a three D-cell halogen bulb flashlight that will last at full brightness for 24 hours and provide useful light for another 72. The four models use either a one- or five-watt Luxeon Star LED, which will last for 100,000 hours.