
40 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 Titanium NH34 GMT Watch SN0121TC is the Orient Kamasu ($375) — common cross-shop and Pro diver. If price is the constraint, the Seiko 5 SNKK27K1 at $133 (vs $329 for the Watchdives x San Martin Titanium NH34 GMT Watch SN0121TC) covers most of the same brief. From the independents, the Thorn 40.5mm Titanium Sub Diver Automatic Watch is the standout microbrand take — shared caliber (Seiko NH34) and Pro diver. Stepping up, the Christopher Ward C60 Trident Pro 600 ($1,090) 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.