Iown 4 Handheld Tactical Flashlights but Surefire has outdid themselves. the only light I have more powerful is my Wolf Eyes Tactical Weapons Light that is on my M4A1 and it is 120 Lumens. Lights like the G3L normally should cost at least twice as much. Below I have listed more from their website.
Compact (palm sized), high-intensity LED flashlight for tactical, outdoor, and general use. Puts out a smooth, brilliant beam with four times the light of a two-D-cell flashlight. Produces tactical-level lighting (enough to temporarily blind and disorient an aggressor) for nearly six hours and useful light levels for an impressive 9.4 hours on a single set of batteries. Features a tough, corrosion-proof Nitrolon® body with molded-in grid and a rugged, aerospace-grade aluminum bezel anodized in black. Light weight, compact size, high output, and extended runtime make the G3 LED a great choice for law enforcement, security, military, and self-defense applications; camping, backpacking, and general outdoor use; and emergency/disaster-preparedness.