Fenix e15 led flashlight 2016 edition 450 lumens output the e15 features an incredibly easy to use twist interface simply tighten the bezel to activate the light loosening and retightening will cycle through modes including the 450 lumen turbo an 110 lumen high 50 lumen mid and an 8 lumen low mode that can run for up to 36 hours the e15 is small enough to be attached to a set of keys for an easy way to keep it with you fenix built this light from the same aircraft grade aluminum it uses