... average lifespan2,5years of continuous use3. 96% optical/reflector efficiency4. 9-36 Volt DC Input5,100%optically clear6. GE LEXAN lens7 ... on/off, no warm-up8. Operating Temp: -40 ~ + 155 deg9,Dual-oversized heat sink10,Low power consumption11,IP68 Rating12,Military standard ...