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Virtually indestructible, microprocessor-controlled LED Total Internal Reflection (TIR) lens  Crenellated Strike Bezel and scalloped tailcap provide enhanced self-defense capabilities  Rugged aerospace-grade anodized aluminum body Coated tempered window protects the LED and lens while maximizing light transmissionThe SureFire E2D LED Defender Flashlight offers a formidable one-two self defense punch. The Defender features both a 200-lumen beam to blind bad guys plus a heavy-duty Strike Bezel with hard-anodized aluminum teeth for the times when physical deterrence is necessary. 2-hour run time on high; 76-hour run time on low (5 lumens). Includes two 123A 3V lithium batteries. Two-stage tailcap switch: press for momentary-on at high setting, release and press again (within two seconds) for momentary-on at low setting; click for constant-on at high-setting, click off and click on again (within two seconds) for constant-on at low setting. Color: Black. Length: 5.4". Manufacturer model #: E2DL-BK.