"Most flashlights have long tubes filled with batteries. You might expect the water resistant Kootek K1 Survival Flashlight, measuring at just a touch over 12-inches, to have batteries for days, but it’s instead hiding a 3.5-inch serrated survival knife on the back that you can bust out in an emergency or for self defense. It’s also got a window breaker and of course a flashlight, the latter based on a Cree T6 LED that outputs a blinding 800 lumens and..." (via GearHungry)
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