PROPOLYMER® flashlight with C4® LED technology and a 50,000 hour lifetime. Unbreakable polycarbonate lens with scratch-resistant coating. 100 lumens typical, up to 4200 candela peak beam intensity. Four AA size alkaline batteries. Rubber-booted, tail end, push-button tail switch for one-handed operation. 6 hours with 4 hours of regulated run time with 2 hours of declining usable light. IP67 Ingress Protection. Non-conductive. Shock resistant (drop test verified). Corrosion proof. Deep parabolic beam generator produces long range brilliance and smooth uniform pattern. Solid state power regulation provides maximum light output throughout battery life.