In Barrow, the northernmost town in Alaska, the sun sets on November 18 and doesn't rise again until January 23. In conditions like these, you best get yourself one heckuva reliable flashlight – and this is it. The rechargeable Fenix UC52 is just 6" long and less than 2" around, but it blasts out a maximum output of 3100 screamin' lumens at 830 feet. Or choose eco, low, medium or high modes to preserve battery life. Click it into strobe mode to startle off an unwelcome intruder, or activate the blinking SOS beacon to alert help from afar. Better yet, the aluminum case is impact resistant, dustproof and IP68-rated waterproof to 2 meters (not that you encounter many puddles when it's -36°F). A lockout function prevents the flashlight from getting turned on accidentally, and a digital readout displays remaining runtime so you'll never get left shivering in the dark.