
48 watches that match on case size, movement family, and price band. Sorted by how close the match is.
The closest alternative to the Sinn 105 St Sa UTC is the Sinn U2 S (EZM 5) ($3,802) — shared caliber (SW 330-2) and Pro diver. If price is the constraint, the Glycine Combat Sub Sport at $1,650 (vs $1,998 for the 105 St Sa UTC) covers most of the same brief. From the independents, the CWC Automatic Divers Watch Mk.2 Black with Date is the standout microbrand take — common cross-shop and Pro diver. Stepping up, the Fortis Flieger F-39 Werk 7 ($4,510) 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.