This is the Malkoff Devices P60 style Drop-in LED Conversion with solid brass heatsink construction. The output is approximately 450 measured out the front lumens. The current draw is only 800ma at 6 volts. The full output runtime is approximately 1.25 hours on two CR123 primary batteries with a nice long taper as voltage drops. It will easily illuminate objects at 350+ feet and will blind opponents within a 100 foot radius. The LED is a Cool White (6200K) Cree XP-G2. This design utilizes a custom orange peel reflector designed by Don McLeish. The reflector offers a very nice balance between throw and spill. It is an outstanding room lighter and short to medium spotter. It was designed specifically for use in Malkoff MD2, Elzetta ZFL-M60, and SureFire 6P, 9P, 6Z, Z2, Z3, C2, C3, M2, G3, and G2 flashlights. It may or may not fit other models. It will not work in SureFire Forends. Please see our SureFire Forend specific models. The input voltage is 3.4 - 9 volts. Below 3.4 volts it will drop out of regulation and run direct drive. This dropin is protected against reverse polarity. This Malkoff Upgrade is designed for rugged service from the ground up. It is fully potted to stand up to rough service and recoil. This item is covered by Our Lifetime Warranty.