The M2 I am talking about is either 220 lumens or 480 ....IIRC. The zoom lens allows you to throw much further than the lumens alone would suggest. For example. ..the 220 lumen 18650 M2 had better throw at extreme distance (several hundred yards) than an Fenix TK40 with almost 3 times the output. http://www.amazon.com/Fenix-TK40-Performance-Flashlight-Maximum/product-reviews/B0020XF0JQ Wanna kill these ads? We can help!