Thorn
Thorn Titanium
- $185 recorded MSRP, $40 lower
- 39 mm case, 1 mm narrower
- Both use automatic movements
What changes
Compare models Dimensions alone do not establish wrist fit.
Watch alternatives
Alternatives to the Seestern Ocean Star S450-2.EC
Keep what you like. Explore what could be different. Compare 45 catalog matches by dimensions, movement and price.
- Case diameter
- 40 mm
- Lug-to-lug
- Not recorded
- Movement
- Automatic
- Catalog MSRP
- $225
The starting pointStarting points
Choose the differences that matter to you.
Closest catalog matchRolex Deepsea Challenge50 mm case, 10 mm widerSee the match Lower recorded MSRPAddiesdive Vintage Sub Dive$59 recorded MSRP, $166 lowerSee the match
Calculated from catalog specifications and similarity signals. Prices are recorded MSRP in USD. Missing measurements stay unknown.
Your priorities
Narrow these matches without leaving the page.
45 matches
Microbrand picks· 11
Discover smaller makers with catalog similarities to this watch.
Thorn
Titanium Dive Watch
- $189 recorded MSRP, $36 lower
- 39 mm case, 1 mm narrower
- Both use automatic movements
What changes
Compare models Lug-to-lug is not recorded for this match.
La Touraine
Atlantic Automatic Diver
- 40.5 mm case, 0.5 mm wider
- Both use automatic movements
What changes
Compare models $350 recorded MSRP, $125 higher
Colomer & Sons
Diver with 60-minute bezel
- Same 40 mm case diameter
- Both use automatic movements
What changes
Compare models $295 recorded MSRP, $70 higher
Knot Watches
AT1-40SSV
- Same 40 mm case diameter
- Both use automatic movements
What changes
Compare models $869 recorded MSRP, $644 higher
Seagull
Ocean Series Pro 300m Waterproof Diving 41mm
- 41 mm case, 1 mm wider
- Both use automatic movements
What changes
Compare models $633 recorded MSRP, $408 higher
Aigi Watches
Gruvebus
- Same 40 mm case diameter
- Both use automatic movements
What changes
Compare models $1,095 recorded MSRP, $870 higher
Aigi Watches
RAAF
- Same 40 mm case diameter
- Both use automatic movements
What changes
Compare models $1,032 recorded MSRP, $807 higher
Balticus Watches
Moonfish
- Same 40 mm case diameter
- Both use automatic movements
What changes
Compare models $1,162 recorded MSRP, $937 higher
Erebus Watches
Origin 40
- Same 40 mm case diameter
- Both use automatic movements
What changes
Compare models $499 recorded MSRP, $274 higher
Ratio
FreeDiver GMT Series
- $170 recorded MSRP, $55 lower
- Same 40 mm case diameter
- Both use automatic movements
What changes
Compare models Lug-to-lug is not recorded for this match.
Mainstream picks· 12
Established-brand matches. Compare the recorded dimensions, movement and price for each watch.
Invicta
Pro Diver 5053
- Same 40 mm case diameter
- Both use automatic movements
What changes
Compare models Lug-to-lug is not recorded for this match.
Orient
Diver Design 40
- 39.9 mm case, 0.1 mm narrower
- Both use automatic movements
What changes
Compare models $370 recorded MSRP, $145 higher
Invicta
Pro Diver 8927OB
- Same 40 mm case diameter
- Both use automatic movements
What changes
Compare models Lug-to-lug is not recorded for this match.
Glycine
Combat Sub Box Ceramic 41mm
- 41 mm case, 1 mm wider
- Both use automatic movements
What changes
Compare models $425 recorded MSRP, $200 higher
Orient
AC0Q-40 Diver
- 39.9 mm case, 0.1 mm narrower
- Both use automatic movements
What changes
Compare models $370 recorded MSRP, $145 higher
Glycine
Combat
- Same 40 mm case diameter
- Both use automatic movements
What changes
Compare models $240 recorded MSRP, $15 higher
Invicta
Pro Diver 47720
- Same 40 mm case diameter
- Both use automatic movements
What changes
Compare models Lug-to-lug is not recorded for this match.
Orient
Mako-3 AA08 Diver
- 41.8 mm case, 1.8 mm wider
- Both use automatic movements
What changes
Compare models $375 recorded MSRP, $150 higher
Bulova
Vintage Sea Hunter
- 39 mm case, 1 mm narrower
- Both use automatic movements
What changes
Compare models $395 recorded MSRP, $170 higher
Seiko
Seiko 5 Sports SKX series
- 38 mm case, 2 mm narrower
- Both use automatic movements
What changes
Compare models $350 recorded MSRP, $125 higher
Seiko
5KX
- 42.5 mm case, 2.5 mm wider
- Both use automatic movements
What changes
Compare models $350 recorded MSRP, $125 higher
Seiko
Seiko 5 Sports SKX series 2024 Special Edition
- 42.5 mm case, 2.5 mm wider
- Both use automatic movements
What changes
$375 recorded MSRP, $150 higher
Pricier alternatives· 10
Matches in a higher price band. Check the specifications to decide whether the differences matter to you.
Movado
Series 800 Automatic
- Same 40 mm case diameter
- Both use automatic movements
What changes
Compare models $1,895 recorded MSRP, $1,670 higher
Tudor
Black Bay 58 79030
- 39 mm case, 1 mm narrower
- Both use automatic movements
What changes
Compare models $4,000 recorded MSRP, $3,775 higher
Timex
Deepwater Meridian 200 GMT
- 42 mm case, 2 mm wider
- Both use automatic movements
What changes
Compare models $549 recorded MSRP, $324 higher
Hamilton
Khaki Navy Scuba Auto
- Same 40 mm case diameter
- Both use automatic movements
What changes
Compare models $975 recorded MSRP, $750 higher
Bremont
The Meta Kronos
- Same 40 mm case diameter
- Both use automatic movements
What changes
Compare models $3,145 recorded MSRP, $2,920 higher
Citizen
Tsuyosa Shore
- Same 40 mm case diameter
- Both use automatic movements
What changes
Compare models $495 recorded MSRP, $270 higher
Oris
Oris X RedBar Limited Edition II
- 39 mm case, 1 mm narrower
- Both use automatic movements
What changes
Compare models $2,800 recorded MSRP, $2,575 higher
Fortis
Marinemaster M-40
- Same 40 mm case diameter
- Both use automatic movements
What changes
Compare models $3,960 recorded MSRP, $3,735 higher
Orient
Sports Diver
- 43.6 mm case, 3.6 mm wider
- Both use automatic movements
What changes
Compare models $745 recorded MSRP, $520 higher
Seiko
Prospex Sea 1965 Heritage Diver's Watch
- Same 40 mm case diameter
- Both use automatic movements
What changes
Compare models $1,300 recorded MSRP, $1,075 higher
Homages & lookalikes· 12
Watches that share this design language: confirmed homages, close tributes, and lookalikes, including the classics that inspired the look. Hidden when nothing in the catalog is related.
Rolex
Deepsea Challenge
- 50 mm case, 10 mm wider
- Both use automatic movements
What changes
Compare models $29,100 recorded MSRP, $28,875 higher
Rolex
Sea-Dweller
- 43 mm case, 3 mm wider
- Both use automatic movements
What changes
Compare models $14,550 recorded MSRP, $14,325 higher
Rolex
Sea-Dweller
- 43 mm case, 3 mm wider
- Both use automatic movements
What changes
Compare models $22,450 recorded MSRP, $22,225 higher
Addiesdive
Vintage Sub Dive
- $59 recorded MSRP, $166 lower
- 41 mm case, 1 mm wider
What changes
Compare models Quartz movement instead of automatic
Addiesdive
Diver 1000M Professional Diving
- $170 recorded MSRP, $55 lower
- 45 mm case, 5 mm wider
- Both use automatic movements
What changes
Compare models Lug-to-lug is not recorded for this match.
Addiesdive
Retro Sub 39mm
- $165 recorded MSRP, $60 lower
- 39 mm case, 1 mm narrower
- Both use automatic movements
What changes
Dimensions alone do not establish wrist fit.
Cronos
Sub Diver No Date (L6009)
- 44 mm case, 4 mm wider
- Both use automatic movements
What changes
Compare models $298 recorded MSRP, $73 higher
Pagani Design
PD-1839
- $210 recorded MSRP, $15 lower
- 43 mm case, 3 mm wider
- Both use automatic movements
What changes
Lug-to-lug is not recorded for this match.
Pagani Design
PD-YS034
- 42 mm case, 2 mm wider
- Both use automatic movements
What changes
$237 recorded MSRP, $12 higher
Pagani Design
PD-1694
- $171 recorded MSRP, $54 lower
- Same 40 mm case diameter
- Both use automatic movements
What changes
Compare models Lug-to-lug is not recorded for this match.
San Martin
GR5 Titanium Modern Sub Dive
- Same 40 mm case diameter
- Both use automatic movements
What changes
Compare models $359 recorded MSRP, $134 higher
San Martin
Sub Diver SN017
- $161 recorded MSRP, $64 lower
- 40.5 mm case, 0.5 mm wider
- Both use automatic movements
What changes
Compare models Lug-to-lug is not recorded for this match.
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