The mid-section and rubber grip ring of the G2ZX CombatLight are specifically designed for use with the Rogers SureFire technique. Use it in the wet, in the cold, or while wearing gloves. With a high-performance LED that produces 600 lumens of brilliant white through a micro-textured polycarbonate reflector, it provides optimal light distribution - excellent reach combined with significant surround light. And its aluminum bezel transfers heat from the LED for supreme reliability. Ergonomic tactical switching offers efficient momentary-on or constant-on activation. Virtually indestructible LED emitter regulated to maximize light output and runtime Precision micro-textured reflector creates smooth, optimized beam Tough polycarbonate window resists impact KEY ATTRIBUTES Output - 600 Lumens Runtime - 1.5 Hours Switching - Tactical Tailcap Peak Beam Intensity - 8,700 Candela Distance - 187 Meters Body Construction - Aluminum / Polymer Finish - Mil-Spec Hard Anodized Weight w/ Batteries - 4.3 ounces (121 g) Length - 5.2 inches (13.2 cm) Bezel Diameter - 1.25 inches (3.175 cm) Batteries - Two 123A lithium (included)