The Fenix E05R – BLACK 400 Lumen Keychain Flashlight is a great flashlight to carry every day. Less than 3″ long and less than 1″ round, this flashlight only weighs 0.85 ounces (24g) making it a light weight option for your keys, pocket or purse. Four brightness levels are accessed by pressing the side switch, and when you need extra power, hold the switch down for a quick burst of a very bright 400 lumens. The built-in battery can be quickly charged by unscrewing the head to reveal the micro-USB charging port. Built for any situation, this little light is built tough, making it impact resistant, dustproof and waterproof. Trust this mini flashlight for your every day needs.