Seiko Prospex Sea Seiko Diver’s Watch 60th Anniversary Limited Edition
Finding alternatives to

Seiko Prospex Sea Seiko Diver’s Watch 60th Anniversary Limited Edition

Ref. spb511j1

54 watches that match on case size, movement family, and price band. Sorted by how close the match is.

Case
40mm
Movement
Automatic
Category
Diver
MSRP
$1,400
The short answer

The closest alternative to the Seiko Prospex Sea Seiko Diver’s Watch 60th Anniversary Limited Edition is the Seiko Prospex Sea ($1,100) — shared caliber (6R55) and Same family (Prospex Sea). If price is the constraint, the Orient AC0Q-40 Diver Watch at $370 (vs $1,400 for the Prospex Sea Seiko Diver’s Watch 60th Anniversary Limited Edition) covers most of the same brief. From the independents, the Christopher Ward C60 Atoll 300 is the standout microbrand take — common cross-shop and Pro diver. Stepping up, the Tudor Pelagos Ultra ($6,900) is where the same idea goes with a bigger budget.

54 matches
Microbrand picks· 12

Independent makers covering the same brief — usually with something the mainstream brands don't.

Christopher Ward
C60 Atoll 300
40mm · Automatic$1,320
Common cross-shop · Pro diver
Boldr
Merlion 50th Anniversary
40mm · Automatic$449
Common cross-shop · Pro diver
Lorier
Hydra SIII
39mm · Automatic$699
Common cross-shop · Pro diver
Astor + Banks
Sea Ranger M2
40mm · Automatic$1,149
Common cross-shop · Pro diver
Phoibos
Voyager
39mm · Automatic$299
Pro diver · Looks nearly identical
Spinnaker
Croft Pioneer
42mm · Automatic$199
Common cross-shop · Pro diver
CWC
Arctic Radar Automatic Diver Watch
41mm · Automatic$1,333
Common cross-shop · Pro diver
Islander
Islander Greenport 39mm Dive Watch with Black and White Dial #ISL-300
39mm · Automatic$399
Pro diver · Looks nearly identical
Boldr
Marine
40mm · Automatic$439
Common cross-shop · Pro diver
Geckota
Ocean-Scout Dive Watch
38.5mm · Automatic$375
Common cross-shop · Pro diver
Zelos
Blacktip 200m Ti
41mm · Automatic$599
Common cross-shop · Pro diver
Zelos
Helmsman 3
40mm · Automatic$529
Common cross-shop · Pro diver
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.

Seiko
Prospex Sea
41.3mm · Automatic$1,100
Shared caliber (6R55) · Same family (Prospex Sea)
Seiko
Prospex Sea 1965 Heritage Diver's Watch
40mm · Automatic$1,300
Shared caliber (6R55) · Same family (Prospex Sea)
Seiko
62MAS
40.5mm · Automatic$1,200
Related caliber family · Same family (Prospex Sea)
Tissot
Seastar 1000
40mm · Automatic$875
Common cross-shop · Pro diver
Tissot
PR516
38mm · Automatic$825
Common cross-shop · Pro diver
Glycine
Combat Sub Box Ceramic
41mm · Automatic$1,800
Common cross-shop · Pro diver
Marathon
Arctic OSAR 41mm Automatic
41mm · Automatic$1,800
Common cross-shop · Pro diver
Longines
HYDROCONQUEST
39mm · Automatic$2,350
Pro diver · Visually similar
Citizen
Series 8 890
42.6mm · Automatic$1,395
Common cross-shop · Pro diver
Glycine
Combat Sub Sport
42mm · Automatic$1,650
Common cross-shop · Pro diver
Hamilton
Khaki Navy Scuba Auto
40mm · Automatic$975
Common cross-shop · Pro diver
Citizen
Promaster Fujitsubo
41mm · Automatic$1,195
Common cross-shop · Pro diver
Cheaper alternatives· 9

If the price is the only thing keeping you off this watch, these get you most of the way there for less.

Orient
AC0Q-40 Diver Watch
39.9mm · Automatic$370
Common cross-shop · Pro diver
Seiko
Prospex Sea
43.8mm · Automatic$625
Same family (Prospex Sea) · Pro diver
Orient
75th Anniversary RA-AC0Q12L30B
39.9mm · Automatic$405
Common cross-shop · Pro diver
Orient
Peanuts 75th Anniversary Limited Edition Diver
39.9mm · Automatic$435
Common cross-shop · Pro diver
Seiko
Prospex Sea PADI Special Edition
41.7mm · Automatic$650
Same family (Prospex Sea) · Pro diver
Seiko
Prospex Sea Save the Ocean Special Edition
43.8mm · Automatic$650
Same family (Prospex Sea) · Pro diver
Citizen
Tsuyosa Shore
40mm · Automatic$495
Common cross-shop · Pro diver
Citizen
Promaster Diver Automatic
44mm · Automatic$469
Common cross-shop · Pro diver
Citizen
Tsuyosa 60
40mm · Automatic$431
Common cross-shop · Visually similar
Pricier alternatives· 12

Where the same idea goes when budget isn't the constraint — luxury upgrades and step-ups.

Tudor
Pelagos Ultra
40mm · Automatic$6,900
Pro diver · Visually similar
Tudor
Pelagos LHD
40mm · Automatic$6,025
Pro diver · Visually similar
Seiko
Prospex Sea 1970 Heritage Diver's Black Series Limited Edition
44mm · Automatic$3,300
Same family (Prospex Sea) · Pro diver
Longines
HYDROCONQUEST GMT
41mm · Automatic$3,350
Pro diver · Automatic
Longines
LEGEND DIVER
39mm · Automatic$3,850
Pro diver · Visually similar
Tudor
Black Bay 58
39mm · Automatic$5,350
Pro diver · Visually similar
Grand Seiko
SLGB023
40.8mm · Spring Drive$12,400
Pro diver · Visually similar
Bremont
Supermarine 300M
40mm · Automatic$3,550
Pro diver · Automatic
Grand Seiko
SBGA481
44.5mm · Spring Drive$11,100
Pro diver · Looks nearly identical
Linde Werdelin
Biformeter Elemental – Black Dial
44mm · Automatic$5,206
Pro diver · Looks nearly identical
Longines
LEGEND DIVER 42
42mm · Automatic$2,850
Pro diver · Automatic
Seiko
Prospex Marinemaster Marinemaster 1968 Heritage JAMSTEC Limited Edition
42.6mm · Automatic$3,900
Pro diver · Visually similar
Looks like this· 9

Visually-adjacent picks pulled by the image-similarity engine. Quality varies — sometimes a true twin, sometimes just a rhyme.

Seestern
S450 Ocean Star
40mm · Automatic$299
Pro diver · Looks nearly identical
Pagani Design
PD-1692 II
40mm · Automatic$125
Common cross-shop · Pro diver
Sugess
Ocean Star S450 YM
40mm · Automatic$449
Pro diver · Looks nearly identical
Pagani Design
PD-1755
40mm · Automatic$146
Common cross-shop · Pro diver
Pagani Design
PD-1818
42mm · Automatic$154
Common cross-shop · Pro diver
Sugess
Seestern 62MAS V3
39mm · Automatic$199
Pro diver · Visually similar
Sugess
Ocean Star S421
40mm · Automatic$449
Pro diver · Visually similar
Seestern
Sub 300 V4
42mm · Automatic$10
Pro diver · Automatic
Seestern
S471 Double Crown Diver
38mm · Automatic$179
Pro diver · Automatic