LEMFO LEF3 - does anyone have one?

Since more than a year I own a LEMFO LEF3-smartwatch. Ever since then from time to time I search the net for a review, a technical blog or at least a mention. Except hundreds of shops advertising to sell one I did not find a single article. The LEMFO-site also provided no hint that it ever had existed.
So, am I the only one of my species?
or – is it sold as a OEM-Watch like the DM100 is actually a LEM-T?

Any one with a LEF3?
Or interested in a review of mine?

This smartwatch also exists as another rebrand: Finow X7, you might find more information for this one.