The CR123 battery is not one that you see all the time. In fact, it’s pretty much only used in digital cameras and flashlights you’d expect to find in a great every day carry rig. There are plenty of options for an EDC flashlight that uses the CR123, but few are as bright as LED Lenser’s new F1 Flashlight. Powered by a single CR123 lithium-cell battery, the F1 pumps out a ridiculous 400 lumens from it’s anodized matte black housing. It’s also waterproof and features an electronic control with temperature sensor, tail stand and interchangeable glass breaking ring. When it comes to portable illumination, this little behemoth will replace just about everything you already have.