About the Fenix E21 V2 Flashlight: The Fenix E21 V2 is an exquisitely made portable outdoor flashlight. It is easy to use with its simple operation, has two modes of output, and is powered by two readily available AA batteries. The E21 V2 uses a high brightness LED with a high efficiency reflector to deliver an outstanding balance between flood beam and focus beam. The E21 V2is durable enough to withstand any impact and is waterproof; it will simplify all of your outdoor adventures such as touring, exploring, hiking, camping, mountaineering, etc.