As noted by Lama, this clearly looks like a rebrand of the JetBlack Volt (every bit of case is the same): JetBlack VOLT Smart Trainer In-Depth Review | DC Rainmaker
Given the seller’s official company/brand is listed as an importer business in the Netherlands (Sport Import Europe BV), that would seem to fit the bill.
I’d be curious, if someone has one, to connect up a Garmin device as ANT+, and see what the ANT+ Manufacturer ID shows as (under info, after pairing a sensor). I don’t see this brand listed in the ANT+ Directory (which doesn’t mean anything right after launch, as there’s often a few month delay), but the manuf ID would tell us who actually makes it.