
48 watches that match on case size, movement family, and price band. Sorted by how close the match is.
The closest alternative to the Serica Ref. 5303 Diving Chronometer is the Glycine Combat Sub Sport ($1,850) — pro diver and Looks nearly identical. If price is the constraint, the Orient AC0Q-40 Diver Watch at $370 (vs $1,768 for the Ref. 5303 Diving Chronometer) covers most of the same brief. From the independents, the Serica Ref. 5330 Diving Chronometer Date is the standout microbrand take — same family (Diving Chronometer) and Pro diver. Stepping up, the Bremont Supermarine 300M ($3,550) 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.