
37 watches that match on case size, movement family, and price band. Sorted by how close the match is.
The closest alternative to the San Martin Watchdives x San Martin Classic 39mm Automatic Dive Watch SN0121GA is the Invicta Pro Diver 8927OB — shared caliber (Seiko NH35) and Pro diver. If price is the constraint, the Seiko Conceptual SNK807K2 at $115 (vs $238 for the Watchdives x San Martin Classic 39mm Automatic Dive Watch SN0121GA) covers most of the same brief. From the independents, the Thorn Watchdives WD007ST 39mm NTTD Dive Watch is the standout microbrand take — shared caliber (Seiko NH35) and Same family (Watchdives). Stepping up, the Glycine Unisex Combat Sub Bronze 39mm Automatic Watch GL0517 ($1,550) is where the same idea goes with a bigger budget.
Independent makers covering the same brief, usually with something the mainstream brands don't.
Established brands covering the same brief at a comparable price: same case size, similar movement family. Often the deciding click for a new buyer.
If the price is the only thing keeping you off this watch, these get you most of the way there for less.
Where the same idea goes when budget isn't the constraint: luxury upgrades and step-ups.