I did some did some checking, and it seems that Watson is made by an outfit called the Gradus Group. They produce a lot of imaging and pro audio equipment, with 23 different brands. Watson is one of these, and is clearly Gradus power products labeled for B&H. I am sure that they make other brands for other large clients. (BTW, the Ruggard bag that many of us got from B&H with the 7DII is a Gradus product as well.)
EDIT: Well, it looks like everything Gradus makes may be sold only at B&H. I didn't check all 23 brands, but the dozen or so I did check are sold exclusively by B&H.