The Fenix E01, a perfect portable mini LED flashlight, with negligible volume and weight, can be put into your purse, pocket or simply be fastened onto your key chain. It could serve you as your reliable companion at any time. Though it is compact in volume, the Fenix E01 has amazing performances. You will be marveled at its excellent brightness and extraordinary long runtime, high reliability durability, outstanding water resistance and its exquisite workmanship. All these make it become your best choice to add to a flashlight collection or to give as gift or to serve as your close companion. Features Uses a Nichia white GS LED with a life of 100,000 hours- Uses one 1.5V AAA Ni-MH, Alkaline battery included 71mm Length , 14.2mm Diameter 14-gram weight excluding battery Digitally regulated output maintains constant brightness- Reverse polarity protection, to protect from improper battery installation- Reliable twist switch- Capable of standing up securely on a flat surface to serve as a candle- Made of durable aircraft-grade aluminum- Toughened ultra-clear glass lens with anti-reflective coating Color BlackSpecifications Out put 13 lumens- Run time 21H- Distance 21M- Intensity 115CD- Impact resistance 1M- Waterproof IPX-8 Under water 2M