The flashlight performs well on patrol and in other tasks; importantly, it is lightweight. I also recommend buying a tactical ring because it really does the job 😀 The only downside is that there is no extra battery available to buy, so the set is not fully tailored (no problem, I bought a separate battery from another brand because I like to have a spare). The flashlight handles 850 lumens well, as you can see in the photo 😀 The charging cable has a nice design because, thanks to its construction, it works as a lanyard and also has a measuring scale 😀 The Wuben T4 is a focused support sword 😀 A great addition to the Fenix TK17 (both flashlights complement each other really well and provide a lot of support during work or trips). I recommend buying it, and the price is really great right now 😀 buy it while it is still in stock 😀