Fenix TK22 XM-L2 U2 680 Lumen Tactical Flashlight with Bonus 25 Lumens Keychain Light Maximum blinding 680 lumen output with tactical strobe mode 295 yards throw produced by lossless flawess reflector 4 Different Brightness Settings: 680 lm/1.3 hr, 265lm/4.5hr, 85 lm/16.5hr, 7lm/168hr Easy to use side mode switch with intelligent memory circuit Military Grade - Impact Proof and Waterproof