Got my Addiesdive Puck. MY-H6 IIRC. Dimensionally not that different from a Tuna, but it seems bigger because while the Tuna shroud tapers toward the top, this is slab sided.
Threw it on a stretch NATO. The tight lugs don't have a lot of clearance, so some thicher bands and straps might not work.
The bezel is kind of "tingy" in sound. Hard to described. Not bad, but with some back play.
Cool watch overall for the low $50 range I paid for it on the sale.