
45 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 Quartz SN0151GS is the Yema Navygraf Marine Nationale Femme ($399) — common cross-shop and Skin-diver style. If price is the constraint, the Timex Expedition Scout 40mm Fabric Slip-Thru Strap Watch - TW4B15500 at $50 (vs $218 for the San Martin Quartz SN0151GS) covers most of the same brief. From the independents, the Edox Grand Ocean Date is the standout microbrand take — pro diver and Looks nearly identical. Stepping up, the Glycine Men's Combat Sub 40mm Quartz Watch GL1062 ($895) 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.