
48 watches that match on case size, movement family, and price band. Sorted by how close the match is.
The closest alternative to the Marathon Arctic OSAR 46mm Automatic is the Marathon JDD (Jumbo Day/Date) Anthracite Diver's Automatic ($3,250) — shared caliber (Sellita SW220-1) and Pro diver. If price is the constraint, the Seiko King Turtle at $650 (vs $2,500 for the Arctic OSAR 46mm Automatic) covers most of the same brief. From the independents, the Spinnaker Piccard is the standout microbrand take — common cross-shop and Pro diver. Stepping up, the Fortis Marinemaster M-44 ($5,120) 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.