The full review is available here

English review at BLF
German review at my website

Summary

A novel design, four Nichia 519A with outstanding color rendition, a boost driver for constant brightness and a simple user interface. The Wurkkos TS26S is an excellent flashlight in its category – good job, Wurkkos!

There are just some minor details that need to be improved, like the sharp cooling fins. Also it would be nice to have a symmetrical battery tube with a single direction clip that you can turn around.