By the way, it seems like the head is a single piece without any kind of bezel, how did they get the reflector/glass in? The light shown in the pictures is just a render and the actual light could be a lot different than the photos.
+1 - the light as pictured can't exist. The head could be smooth if there was a retaining ring over the lens, but I don't see one. Now I see why a black button turns red and green - wondering how that would work, maybe some degree of transparency...
Most of these brands just choose from an OEM catalog and have their brand lasered on it, some design their own product (probably the case of Manker) and have it made by a subcontractor.
Said sub then release a similar product under another brand name undercutting the designer, business as usual in China.