The eb1 backup - an upgraded version of the original e1b backup - is an extremely compact yet powerful dual-output flashlight that can be used as a backup light for patrol officers or a duty light for plainclothes officers. It's also ideal for outdoor, self-defense, and everyday-carry applications. The backup features a virtually indestructible led emitter and a precision total internal reflection (tir) lens that create a far-reaching focused beam optimized for situational awareness. click-type switch with tailcap shroud - partially press tailcap pushbutton for momentary-on high output; press further to click constant-on high. Return to off and press or click again within two seconds for low output. the brilliant 200-lumen high output beam is ideal for identifying threats and overwhelming the sight of adversaries. The 5-lumen low output is perfect for reading a map, checking an id, or navigating in low light with minimal degradation to your dark-adapted vision. The backup can run at this level for 40 hours, a valuable feature for outdoor or emergency situations. A tough, lightweight mil-spec hard-anodized aluminum body protects the eb1 backup's sophisticated electronics, and its smooth contours minimize clothing snag and pressure points.