I found this review of Niwalker Nova MM20EB:
https://www.helle-taschenlampen.de/...ova-mm20eb-3xxp-l-hi-3500-ansi-lumen-max.404/
You might want to use Google translator, since this review is written in German language.
https://www.helle-taschenlampen.de/...ova-mm20eb-3xxp-l-hi-3500-ansi-lumen-max.404/
You might want to use Google translator, since this review is written in German language.