The Fenix E20 V2 has the best & slickest tail cap interface ever AA flashlight review - YouTube
Fenix E20 V2.0 Luminus Sst20 LED 350 Lumens EDC Flashlight Torch AA Batteries for sale online | eBay
Fenix Lighting USA - AA-POWERED EDC. The Fenix E20 V2.0 is a great everyday carry flashlight that is powered by readily available AA batteries. It has a maximum output of 350 lumens