Tl;Dr: ArkPro Ultra is pricey, but you mostly get what you pay for. The build quality, switches, ergonomics, pocket clip, all four beams, and dual charging options are excellent. The UI great. Brightness and runtime are good, but regulation is bad like most Olights. The built in battery is unfortunate but comes with the territory. The “Ultra” features (OAL material, Arkbeat, different Aesthetic) seem pretty trivial to me, but it’s still got everything that makes the standard ArkPro great. Overall, this is the nicest flat EDC light on the market right now. That’s something I’ve said in several Arkfeld-series reviews because Olight just keeps making them better and better.