Olight i1 EOS Flashlights are incredibly small but surprisingly powerful. These little O-Light flashlights manage to cram a whopping 180 lumens into two and a half inches of flashlight. That's barely larger than the CR123A rechargeable battery that powers it. Built for transportation, the i1 EOS flashlight has a long battery life to match, with up to 72 hours of run time on the 4 lumen Low setting. Speaking of power settings, the O-Light i1 EOS Pocket Flash Light has three of them - Low, Medium, and High - that you can switch between by loosening and tightening the flashlight's bezel. O-light has improved the i1's design with the addition of a removable pocket clip and a keychain attachment, both of which make carrying this mini flashlight easier than ever. The type III hard anodized aluminum (or flawless stainless steel, depending on the model you choose) of the mini flashlight's body makes it tough, while the IPX-8 waterproofing is sure to come in handy the next time you're caught in a downpour or drop your flashlight in a lake. For a diminutive LED flashlight that brings full-size illumination wherever you go, slip the O Light i-1 EOS Mini Flashlight in your pocket.