Finding alternatives to
Seiko Prospex Sea The Black Series
48 watches that match on case size, movement family, and price band. Sorted by how close the match is.
Case
45mm
Movement
Automatic
Category
Diver
MSRP
$765
The short answer
The closest alternative to the Seiko Prospex Sea The Black Series is the Seiko Prospex Sea Save the Ocean Special Edition ($625) — shared caliber (Seiko 4R36) and Same family (Prospex Sea). If price is the constraint, the Orient Kanno at $320 (vs $765 for the Prospex Sea The Black Series) covers most of the same brief. From the independents, the Boldr Odyssey Original is the standout microbrand take — common cross-shop and Pro diver. Stepping up, the Seiko Prospex Sea 1970 Heritage Diver's Black Series Limited Edition ($3,300) is where the same idea goes with a bigger budget.
48 matches
Microbrand picks· 12
Independent makers covering the same brief — usually with something the mainstream brands don't.
Mainstream picks· 12
Established brands covering the same brief at a comparable price — same case size, similar movement family. Often the deciding click for a new buyer.
Cheaper alternatives· 12
If the price is the only thing keeping you off this watch, these get you most of the way there for less.
Pricier alternatives· 12
Where the same idea goes when budget isn't the constraint — luxury upgrades and step-ups.
