The Fenix E01, a perfect portable mini LED flashlight, with negligible volume and weight that can be put into your purse, pocket, or simply be fastened onto your keychain. It serves as your reliable companion at any time. Though it is compact in volume, the Fenix E01 has amazing performance. You'll be amazed at its excellent brightness and extraordinarily long runtime, high reliability & durability, outstanding water resistance and exquisite workmanship. All these make it your best choice to add to a flashlight collection or to give as a gift. Features Utilizes a Nichia white GS LED with a life of 100,000 hours Constant brightness: 10 Lumens Uses one 1.5V AAA ( Alkaline, Ni-MH, Lithium ) battery, inexpensive and widely available 21-hour working time ( 11-hour sun mode plus 10-hour moon mode) Made of aircraft grade aluminium Durable Type III hard anodised finish Waterproof to IPX-8 Standard Reliable twist switch Capable of standing up securely on a flat surface to serve as a candle 3 year warranty Dimensions: 7.1cm (Length) x 1.4cm (Diameter), 14-gram (weight, excluding batteries)