“Barrel shaped”?
Hmm...perhaps they meant “pillow-shaped” or more commonly, "cushion shaped"?
Either way, this is a very cool watch at what seems to be a pretty decent price. It’s also an example of the reasonably priced Seiko Diver watches that seem to be on the endangered species list as Seiko focuses on crazy-expensive Limited Edition watches, or continues to pump out more examples their white-bread-boring line of Seiko 5, semi-sport watches.
MD’s photos are a little weak so I recommend looking around for better examples to be sure this one’s right for you—but don’t dilly dally, no telling how long this drop will last before it’s replaced by another damned Ingersoll!
This link has some nice shots:
https://www.gnomonwatches.com/products/prospex-turtle-mini-200m-automatic-blue-ref-srpc39j1