Synchron
Poseidon
- Same 41 mm case diameter
- Same La Joux-Perret G100 caliber
What changes
Compare models Dimensions alone do not establish wrist fit.
Watch alternatives
Alternatives to the Synchron Sealab Ti300M
Keep what you like. Explore what could be different. Compare 46 catalog matches by dimensions, movement and price.
- Case diameter
- 41 mm
- Lug-to-lug
- 45 mm
- Movement
- Automatic
- Catalog MSRP
- Not recorded
The starting pointStarting points
Choose the differences that matter to you.
Closest catalog matchSynchron PoseidonSame 41 mm case diameterSee the match Shorter lug-to-lugBorealis Watch Co. Porto Covo42.5 mm lug-to-lug, 2.5 mm shorterSee 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.
46 matches
Microbrand picks· 12
Discover smaller makers with catalog similarities to this watch.
Synchron
Ti300M Poseidon Deep Black
- Same 41 mm case diameter
- Same La Joux-Perret G100 caliber
What changes
Compare models Dimensions alone do not establish wrist fit.
Zelos
Spearfish 3
- 40 mm case, 1 mm narrower
- Same La Joux-Perret G100 caliber
What changes
Compare models 0.4 mm thinner case
Zelos
Swordfish 3
- 42 mm case, 1 mm wider
- Both use automatic movements
What changes
Compare models Lug-to-lug is not recorded for this match.
BOLDR Supply Co.
Odyssey Freediver Mint
- 40 mm case, 1 mm narrower
- 48 mm lug-to-lug, 3 mm longer
- Both use automatic movements
What changes
Compare models 2.3 mm thicker case
BOLDR Supply Co.
Odyssey Freediver
- 40 mm case, 1 mm narrower
- 48 mm lug-to-lug, 3 mm longer
- Both use automatic movements
What changes
Compare models 2.3 mm thicker case
Duxot
Dive Watch
- 40 mm case, 1 mm narrower
- Both use automatic movements
What changes
Compare models Lug-to-lug is not recorded for this match.
Borealis Watch Co.
Porto Covo
- 40 mm case, 1 mm narrower
- 42.5 mm lug-to-lug, 2.5 mm shorter
- Both use automatic movements
What changes
Compare models 0.3 mm thinner case
LIV Watches
GX-Diver's
- Same 41 mm case diameter
- 48 mm lug-to-lug, 3 mm longer
- Both use automatic movements
What changes
Compare models 1 mm thicker case
Astor + Banks
Sea Ranger M2
- 40 mm case, 1 mm narrower
- 45.5 mm lug-to-lug, 0.5 mm longer
- Same La Joux-Perret G100 caliber
What changes
Compare models 0.6 mm thicker case
Balticus Watches
Moonfish
- 40 mm case, 1 mm narrower
- Both use automatic movements
What changes
Compare models Lug-to-lug is not recorded for this match.
Oceaneva
GMT Titanium Automatic Deep Marine Explorer 1250M
- 42 mm case, 1 mm wider
- Both use automatic movements
What changes
Compare models 3.9 mm thicker case
Mainstream picks· 12
Established-brand matches. Compare the recorded dimensions, movement and price for each watch.
Christopher Ward
C60 Trident Reef
- Same 41 mm case diameter
- 47.9 mm lug-to-lug, 2.9 mm longer
- Both use automatic movements
What changes
Compare models 0.5 mm thinner case
Christopher Ward
C60 Trident Lumière
- Same 41 mm case diameter
- 47.9 mm lug-to-lug, 2.9 mm longer
- Both use automatic movements
What changes
Compare models 1.1 mm thinner case
Christopher Ward
C60 Trident Pro 300
- 40 mm case, 1 mm narrower
- 47.5 mm lug-to-lug, 2.5 mm longer
- Both use automatic movements
What changes
Compare models 0.6 mm thinner case
Seiko
Captain Willard
- 42.7 mm case, 1.7 mm wider
- 46.6 mm lug-to-lug, 1.6 mm longer
- Both use automatic movements
What changes
Compare models 1.3 mm thicker case
DOXA
SUB 600T
- 40 mm case, 1 mm narrower
What changes
Compare models Lug-to-lug is not recorded for this match.
Tissot
Seastar Wilson WNBA
- 40 mm case, 1 mm narrower
- Both use automatic movements
What changes
Compare models 0.6 mm thicker case
Massena LAB
Unimatic U4S-T-SPW
- 40 mm case, 1 mm narrower
- Both use automatic movements
What changes
Compare models 1.4 mm thicker case
Hamilton
Khaki Navy Scuba Auto
- 40 mm case, 1 mm narrower
- Both use automatic movements
What changes
Compare models 1 mm thicker case
DOXA
SUB 200
- 42 mm case, 1 mm wider
What changes
Compare models Lug-to-lug is not recorded for this match.
Seiko
Prospex Sea
- 41.3 mm case, 0.3 mm wider
- 48.2 mm lug-to-lug, 3.2 mm longer
- Both use automatic movements
What changes
Compare models 0.6 mm thicker case
Longines
HydroConquest Mesh
- Same 41 mm case diameter
- 51.1 mm lug-to-lug, 6.1 mm longer
- Both use automatic movements
What changes
Compare models Dimensions alone do not establish wrist fit.
Cheaper alternatives· 10
Matches in a lower price band. A recorded MSRP difference is shown only when both prices are known.
Glycine
Combat Sub Bronze GL0517
- 39 mm case, 2 mm narrower
- Both use automatic movements
What changes
Compare models 0.7 mm thinner case
Orient
AC0Q-40 Diver
- 39.9 mm case, 1.1 mm narrower
- 46.5 mm lug-to-lug, 1.5 mm longer
- Both use automatic movements
What changes
Compare models 0.9 mm thicker case
Bulova
Vintage Sea Hunter
- 39 mm case, 2 mm narrower
- 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, 0.8 mm wider
- 46.8 mm lug-to-lug, 1.8 mm longer
- Both use automatic movements
What changes
Compare models 0.9 mm thicker case
Orient
AC0Q-40 RA-AC0Q05P10B
- 39.9 mm case, 1.1 mm narrower
- 46.5 mm lug-to-lug, 1.5 mm longer
- Both use automatic movements
What changes
Compare models 0.9 mm thicker case
Stowa
Prodiver
- 42 mm case, 1 mm wider
- 50.3 mm lug-to-lug, 5.3 mm longer
- Both use automatic movements
What changes
Compare models 3.7 mm thicker case
Bulova
Oceanographer Devil Diver
- Same 41 mm case diameter
- Both use automatic movements
What changes
Compare models Lug-to-lug is not recorded for this match.
Bulova
Marine Star
- Same 41 mm case diameter
- Both use automatic movements
What changes
Compare models Lug-to-lug is not recorded for this match.
Glycine
Combat Sub
- 42 mm case, 1 mm wider
- Both use automatic movements
What changes
Compare models Lug-to-lug is not recorded for this match.
Seiko
Prospex Sea
- 42 mm case, 1 mm wider
- 48.6 mm lug-to-lug, 3.6 mm longer
- Both use automatic movements
What changes
Compare models 1.4 mm thicker case
Pricier alternatives· 12
Matches in a higher price band. Check the specifications to decide whether the differences matter to you.
Fortis
Marinemaster M-40
- 40 mm case, 1 mm narrower
- Both use automatic movements
What changes
Compare models 1.1 mm thicker case
DOXA
SUB 250T GMT
- 40 mm case, 1 mm narrower
- Both use automatic movements
What changes
Compare models Lug-to-lug is not recorded for this match.
Breitling
Superocean Automatic
- 42 mm case, 1 mm wider
- Both use automatic movements
What changes
Compare models 0.7 mm thicker case
Omega
Seamaster Planet Ocean 600M Co Axial Master Chronometer 42mm
- 42 mm case, 1 mm wider
- 47.5 mm lug-to-lug, 2.5 mm longer
- Both use automatic movements
What changes
Compare models 1.9 mm thicker case
Omega
Seamaster Spectre Edition
- 42 mm case, 1 mm wider
- 50 mm lug-to-lug, 5 mm longer
- Both use automatic movements
What changes
Compare models 2.3 mm thicker case
Omega
Seamaster Spectre Limited Edition 210.30.42.20.01.029
- 42 mm case, 1 mm wider
- 50 mm lug-to-lug, 5 mm longer
- Both use automatic movements
What changes
Compare models 2.3 mm thicker case
DOXA
SUB 300
- 42.5 mm case, 1.5 mm wider
- Both use automatic movements
What changes
Compare models Lug-to-lug is not recorded for this match.
DOXA
Sub 300T Ti
- 42.5 mm case, 1.5 mm wider
- Both use automatic movements
What changes
Compare models Lug-to-lug is not recorded for this match.
Norqain
Adventure Neverest 40mm Limited Edition
- 40 mm case, 1 mm narrower
- 48.3 mm lug-to-lug, 3.3 mm longer
- Both use automatic movements
What changes
Compare models 0.7 mm thicker case
Bremont
Supermarine 300M
- 40 mm case, 1 mm narrower
- Both use automatic movements
What changes
Compare models Lug-to-lug is not recorded for this match.
Fortis
Marinemaster M-44
- 44 mm case, 3 mm wider
- Both use automatic movements
What changes
Compare models 2.1 mm thicker case
Yema
YEMA x Alain Silberstein Limited Edition
- 40 mm case, 1 mm narrower
- Both use automatic movements
What changes
Compare models 0.9 mm thinner case
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