Aigi Watches
GRUVEBUS
- $1,095 recorded MSRP, $2,455 lower
- Same 40 mm case diameter
- Both use automatic movements
What changes
Compare models 0.3 mm thicker case
Watch alternatives
Alternatives to the Bremont Supermarine 300M
Reference sm40-nd-ss-gn-b
Keep what you like. Explore what could be different. Compare 48 catalog matches by dimensions, movement and price.
- Case diameter
- 40 mm
- Lug-to-lug
- Not recorded
- Movement
- Automatic
- Catalog MSRP
- $3,550
The starting pointStarting points
Choose the differences that matter to you.
Closest catalog matchLongines LEGEND DIVER39 mm case, 1 mm narrowerSee the match Lower recorded MSRPLongines HYDROCONQUEST$2,000 recorded MSRP, $1,550 lowerSee the match
Calculated from catalog specifications and similarity signals. Prices are recorded MSRP in USD, not current retail offers. Missing measurements stay unknown.
Your priorities
Narrow these matches without leaving the page.
ColorwayPick a colorway to match a specific dial
48 matches
Microbrand picks· 12
Discover smaller makers with catalog similarities to this watch.
Duckworth Prestex
Belmont 300 Automatic
- $750 recorded MSRP, $2,800 lower
- 42 mm case, 2 mm wider
- Both use automatic movements
What changes
Compare models 1 mm thicker case
Fathers
Orologio Diver Automatico Swiss Made
- $1,074 recorded MSRP, $2,476 lower
- Same 40 mm case diameter
- Both use automatic movements
What changes
Compare models Dimensions alone do not establish wrist fit.
Phoibos
Eagle Ray No Date
- $480 recorded MSRP, $3,070 lower
- Same 40 mm case diameter
- Both use automatic movements
What changes
Compare models Dimensions alone do not establish wrist fit.
Specht & Sohne
Specht & Söhne SP2653 Automatic
- $380 recorded MSRP, $3,170 lower
- 39 mm case, 1 mm narrower
- Both use automatic movements
What changes
Compare models Dimensions alone do not establish wrist fit.
Zelos
Spearfish 3
- $749 recorded MSRP, $2,801 lower
- Same 40 mm case diameter
- Both use automatic movements
What changes
Compare models 0.5 mm thinner case
Astor + Banks
Sea Ranger M2
- $1,299 recorded MSRP, $2,251 lower
- Same 40 mm case diameter
- Both use automatic movements
What changes
Compare models 0.5 mm thicker case
Méraud
Bonaire
- $925 recorded MSRP, $2,625 lower
- Same 40 mm case diameter
- Both use automatic movements
What changes
Compare models 0.2 mm thicker case
S.U.F Helsinki
Vetehinen
- 42 mm case, 2 mm wider
- Both use automatic movements
What changes
Compare models 0.6 mm thinner case. $4,391 recorded MSRP, $841 higher
Spinnaker
Spence 300
- $488 recorded MSRP, $3,062 lower
- Same 40 mm case diameter
- Both use automatic movements
What changes
Compare models 0.5 mm thinner case
Geckota
Ocean-Scout Dive Watch
- $570 recorded MSRP, $2,980 lower
- 38.5 mm case, 1.5 mm narrower
- Both use automatic movements
What changes
Compare models 0.2 mm thinner case
Vero Watch Company
Open Water 41
- $875 recorded MSRP, $2,675 lower
- Same 40 mm case diameter
- Both use automatic movements
What changes
Compare models 1 mm thinner case
Mainstream picks· 12
Established-brand matches. Compare the recorded dimensions, movement and price for each watch.
Longines
LEGEND DIVER
- 39 mm case, 1 mm narrower
- Both use automatic movements
What changes
Compare models 0.7 mm thicker case. $3,850 recorded MSRP, $300 higher
Longines
HYDROCONQUEST
- $2,000 recorded MSRP, $1,550 lower
- 41 mm case, 1 mm wider
- Both use automatic movements
What changes
Compare models Lug-to-lug is not recorded for this match.
Longines
HYDROCONQUEST
- $2,200 recorded MSRP, $1,350 lower
- 39 mm case, 1 mm narrower
- Both use automatic movements
What changes
Compare models 0.3 mm thinner case
Yema
Superman Gilt CMM.10
- $1,999 recorded MSRP, $1,551 lower
- 39 mm case, 1 mm narrower
- Both use automatic movements
What changes
Compare models 0.7 mm thinner case
Norqain
Adventure 40mm
- Same 40 mm case diameter
- Both use automatic movements
What changes
Compare models 0.6 mm thicker case. $3,790 recorded MSRP, $240 higher
Omega
Seamaster Diver 300M Co Axial Master Chronometer 42mm
- 42 mm case, 2 mm wider
- Both use automatic movements
What changes
Compare models 1.6 mm thicker case. $6,700 recorded MSRP, $3,150 higher
Breitling
Avenger Automatic
- 42 mm case, 2 mm wider
- Both use automatic movements
What changes
Compare models 0.2 mm thicker case. $4,900 recorded MSRP, $1,350 higher
Breitling
Superocean Heritage B31 Automatic
- Same 40 mm case diameter
- Both use automatic movements
What changes
Compare models 0.3 mm thinner case. $6,500 recorded MSRP, $2,950 higher
Yema
Superman Dato CMM.10
- $1,890 recorded MSRP, $1,660 lower
- 39.5 mm case, 0.5 mm narrower
- Both use automatic movements
What changes
Compare models 0.2 mm thinner case
DOXA
SUB 250T GMT
- $2,790 recorded MSRP, $760 lower
- Same 40 mm case diameter
- Both use automatic movements
What changes
Compare models Lug-to-lug is not recorded for this match.
Breitling
Superocean Automatic
- 44 mm case, 4 mm wider
- Both use automatic movements
What changes
Compare models 0.6 mm thicker case. $5,700 recorded MSRP, $2,150 higher
Oris
Divers Sixty‑Five Calibre 400
- 38 mm case, 2 mm narrower
- Both use automatic movements
What changes
Compare models $4,100 recorded MSRP, $550 higher
Cheaper alternatives· 12
Matches in a lower price band. A recorded MSRP difference is shown only when both prices are known.
Orient
AC0Q-40 Diver Watch
- $355 recorded MSRP, $3,195 lower
- 39.9 mm case, 0.1 mm narrower
- Both use automatic movements
What changes
Compare models 0.8 mm thicker case
Hamilton
Khaki Navy Scuba Auto
- $975 recorded MSRP, $2,575 lower
- Same 40 mm case diameter
- Both use automatic movements
What changes
Compare models 0.9 mm thicker case
Seiko
Prospex Sea 1968 Heritage Diver's GMT
- $1,500 recorded MSRP, $2,050 lower
- 42 mm case, 2 mm wider
- Both use automatic movements
What changes
Compare models 0.9 mm thicker case
Orient
Diver Design 40
- $355 recorded MSRP, $3,195 lower
- 39.9 mm case, 0.1 mm narrower
- Both use automatic movements
What changes
Compare models 0.8 mm thicker case
Tissot
Seastar 1000
- $925 recorded MSRP, $2,625 lower
- 43 mm case, 3 mm wider
- Both use automatic movements
What changes
Compare models 0.7 mm thicker case
Glycine
Sea Kraken
- $1,550 recorded MSRP, $2,000 lower
- 39 mm case, 1 mm narrower
- Both use automatic movements
What changes
Compare models 0.7 mm thicker case
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.
Yema
Diver
- $990 recorded MSRP, $2,560 lower
- 39.5 mm case, 0.5 mm narrower
- Both use automatic movements
What changes
Compare models 1.1 mm thinner case
Bulova
Black Dial Stainless Steel Bracelet Vintage Sea Hunter 43B175
- $375 recorded MSRP, $3,175 lower
- 39 mm case, 1 mm narrower
- Both use automatic movements
What changes
Compare models Lug-to-lug is not recorded for this match.
Glycine
Unisex Combat Sub Bronze 39mm Automatic Watch GL0517
- $615 recorded MSRP, $2,935 lower
- 39 mm case, 1 mm narrower
- Both use automatic movements
What changes
Compare models 0.8 mm thinner case
Glycine
Combat Sub Sport
- $1,650 recorded MSRP, $1,900 lower
- 39 mm case, 1 mm narrower
- Both use automatic movements
What changes
Compare models 0.8 mm thinner case
Seiko
Prospex Sea 1965 Heritage Diver's Watch PADI Special Edition
- $1,550 recorded MSRP, $2,000 lower
- Same 40 mm case diameter
- Both use automatic movements
What changes
Compare models 1 mm thicker case
Pricier alternatives· 12
Matches in a higher price band. Check the specifications to decide whether the differences matter to you.
Omega
Seamaster 300 Co Axial Master Chronometer 41mm
- 41 mm case, 1 mm wider
- Both use automatic movements
What changes
Compare models 1.8 mm thicker case. $58,000 recorded MSRP, $54,450 higher
Omega
Seamaster Diver 300M Co Axial Master Chronometer 42mm
- 42 mm case, 2 mm wider
- Both use automatic movements
What changes
Compare models 1.6 mm thicker case. $35,000 recorded MSRP, $31,450 higher
Tudor
Black Bay 58 18K
- 39 mm case, 1 mm narrower
- Both use automatic movements
What changes
0.7 mm thicker case
Blancpain
Bathyscaphe
- 43 mm case, 3 mm wider
- Both use automatic movements
What changes
Compare models 1.5 mm thicker case. $26,000 recorded MSRP, $22,450 higher
Omega
Seamaster 300 Co Axial Master Chronometer 41mm
- 41 mm case, 1 mm wider
- Both use automatic movements
What changes
Compare models 1.8 mm thicker case. $8,000 recorded MSRP, $4,450 higher
Blancpain
Bathyscaphe Quantième Complet Phases de Lune
- 43.6 mm case, 3.6 mm wider
- Both use automatic movements
What changes
Compare models 1.4 mm thicker case. $31,700 recorded MSRP, $28,150 higher
Blancpain
Bathyscaphe Chronographe Flyback
- 43.6 mm case, 3.6 mm wider
- Both use automatic movements
What changes
Compare models 3.3 mm thicker case. $31,700 recorded MSRP, $28,150 higher
Breitling
Superocean Automatic 46 Super Diver
- 46 mm case, 6 mm wider
- Both use automatic movements
What changes
Compare models 2.5 mm thicker case. $7,600 recorded MSRP, $4,050 higher
Grand Seiko
SLGB023
- 40.8 mm case, 0.8 mm wider
What changes
Compare models Spring Drive movement instead of automatic. 0.9 mm thicker case
TAG Heuer
Aquaracer Calibre 5
- 41 mm case, 1 mm wider
- Both use automatic movements
What changes
Compare models Lug-to-lug is not recorded for this match.
IWC Schaffhausen
Iw328801 Aquatimer Automatic
- 42 mm case, 2 mm wider
- Both use automatic movements
What changes
Compare models 2.1 mm thicker case. $7,800 recorded MSRP, $4,250 higher
Breitling
Superocean Heritage B31 Automatic 40 Kelly Slater
- Same 40 mm case diameter
- Both use automatic movements
What changes
Compare models 0.3 mm thinner case
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