JIANGHUN
Deep Challenger Chronograph Diver 300
- $528 recorded MSRP, $3,414 lower
- 42 mm case, 1 mm wider
- Both use automatic movements
What changes
0.3 mm thicker case
Watch alternatives
Alternatives to the Sinn 903 St II
Reference 903 St II
Keep what you like. Explore what could be different. Compare 59 catalog matches by dimensions, movement and price.
- Case diameter
- 41 mm
- Lug-to-lug
- Not recorded
- Movement
- Automatic
- Catalog MSRP
- $3,942
The starting pointStarting points
Choose the differences that matter to you.
Closest catalog matchSinn 609941.5 mm case, 0.5 mm widerSee the match Lower recorded MSRPAddiesdive 37mm VK63 Racing Chronograph Quartz Watch AD2539$89 recorded MSRP, $3,853 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
59 matches
Microbrand picks· 12
Discover smaller makers with catalog similarities to this watch.
Vertigo Watches
Pilot One V2
- $673 recorded MSRP, $3,269 lower
- Same 41 mm case diameter
What changes
Manual movement instead of automatic. 0.5 mm thinner case
Echo/Neutra
Cristallo Professional Diver 500m
- $1,450 recorded MSRP, $2,492 lower
- 42 mm case, 1 mm wider
- Both use automatic movements
What changes
0.6 mm thinner case
Laco
Hockenheim
- $2,400 recorded MSRP, $1,542 lower
- 42 mm case, 1 mm wider
- Both use automatic movements
What changes
0.3 mm thinner case
Ollech & Wajs
MIRAGE III
- 40 mm case, 1 mm narrower
- Both use automatic movements
What changes
0.2 mm thicker case
Kobold
Polar Surveyor Chronograph
- Same 41 mm case diameter
- Both use automatic movements
What changes
2.5 mm thicker case. $9,250 recorded MSRP, $5,308 higher
Cadola
Arctic White
- $3,050 recorded MSRP, $892 lower
- 43 mm case, 2 mm wider
- Both use automatic movements
What changes
Lug-to-lug is not recorded for this match.
Ollech & Wajs
RALLYE DE PARIS
- $2,696 recorded MSRP, $1,246 lower
- 39.5 mm case, 1.5 mm narrower
- Both use automatic movements
What changes
0.5 mm thicker case
Seaholm
Flats Chronograph
- $3,495 recorded MSRP, $447 lower
- Same 41 mm case diameter
- Both use automatic movements
What changes
Lug-to-lug is not recorded for this match.
Olech & Wajs Watches
MIRAGE III
- 40 mm case, 1 mm narrower
- Both use automatic movements
What changes
0.2 mm thicker case
Spinnaker
Tesei Titanium
- $359 recorded MSRP, $3,583 lower
- 42 mm case, 1 mm wider
- Both use automatic movements
What changes
0.5 mm thinner case
Micromilspec
Milgraph
- 42 mm case, 1 mm wider
- Both use automatic movements
What changes
0.5 mm thicker case
Mainstream picks· 12
Established-brand matches. Compare the recorded dimensions, movement and price for each watch.
Sinn
6099
- 41.5 mm case, 0.5 mm wider
- Same La Joux-Perret L110 caliber
What changes
Compare models 0.5 mm thicker case. $4,990 recorded MSRP, $1,048 higher
Sinn
144 St DIAPAL
- Same 41 mm case diameter
- Both use automatic movements
What changes
Compare models 0.3 mm thinner case. $4,428 recorded MSRP, $486 higher
Sinn
6012
- 41.5 mm case, 0.5 mm wider
- Both use automatic movements
What changes
Compare models $5,929 recorded MSRP, $1,987 higher
Fortis
Novonaut N-42
- 42 mm case, 1 mm wider
- Both use automatic movements
What changes
$6,150 recorded MSRP, $2,208 higher
Breitling
Avenger B01 Chronograph
- 42 mm case, 1 mm wider
- Both use automatic movements
What changes
0.6 mm thicker case. $7,150 recorded MSRP, $3,208 higher
Tudor
Black Bay Chrono
- Same 41 mm case diameter
- Both use automatic movements
What changes
$7,000 recorded MSRP, $3,058 higher
Omega
Speedmaster Racing Co-Axial Chronograph 40 mm
- 40 mm case, 1 mm narrower
- Both use automatic movements
What changes
0.6 mm thicker case. $4,800 recorded MSRP, $858 higher
Bremont
Supermarine Chrono
- 43 mm case, 2 mm wider
- Both use automatic movements
What changes
1.4 mm thicker case. $7,300 recorded MSRP, $3,358 higher
Norqain
Adventure Chrono 41mm NHL Limited Edition
- Same 41 mm case diameter
- Both use automatic movements
What changes
0.5 mm thicker case. $5,490 recorded MSRP, $1,548 higher
Breitling
Avenger Chronograph
- 43 mm case, 2 mm wider
- Both use automatic movements
What changes
1.9 mm thicker case. $6,600 recorded MSRP, $2,658 higher
Marathon
Jeep Rubicon GSAR
- $2,100 recorded MSRP, $1,842 lower
- Same 41 mm case diameter
- Both use automatic movements
What changes
0.5 mm thinner case
Movado
Alta Super Sub Sea Chronograph
- 43 mm case, 2 mm wider
- Both use automatic movements
What changes
2.4 mm thicker case. $3,995 recorded MSRP, $53 higher
Cheaper alternatives· 12
Matches in a lower price band. A recorded MSRP difference is shown only when both prices are known.
Marathon
Jeep Rubicon TSAR
- $1,650 recorded MSRP, $2,292 lower
- Same 41 mm case diameter
- Both use automatic movements
What changes
0.5 mm thinner case
Marathon
Arctic OSAR 41mm Automatic
- $1,800 recorded MSRP, $2,142 lower
- Same 41 mm case diameter
- Both use automatic movements
What changes
1.5 mm thinner case
Marathon
OSAR-D (Original SAR with Date) Automatic 41mm
- $1,800 recorded MSRP, $2,142 lower
- Same 41 mm case diameter
- Both use automatic movements
What changes
1.5 mm thinner case
Damasko
DC66
- 42 mm case, 1 mm wider
- Both use automatic movements
What changes
Lug-to-lug is not recorded for this match.
Orient
75th Anniversary RA-TX0210L10B
- $375 recorded MSRP, $3,567 lower
- 42.8 mm case, 1.8 mm wider
- Both use automatic movements
What changes
1.4 mm thinner case
Damasko
DC66 black
- 42 mm case, 1 mm wider
- Both use automatic movements
What changes
Lug-to-lug is not recorded for this match.
Longines
HydroConquest 39mm Automatic Diving Watch
- $1,275 recorded MSRP, $2,667 lower
- 39 mm case, 2 mm narrower
- Both use automatic movements
What changes
Lug-to-lug is not recorded for this match.
Orient
Diver Watch
- $350 recorded MSRP, $3,592 lower
- 41.5 mm case, 0.5 mm wider
- Both use automatic movements
What changes
1.5 mm thinner case
Christopher Ward
C60 Trident Pro 300
- $1,095 recorded MSRP, $2,847 lower
- 40 mm case, 1 mm narrower
- Both use automatic movements
What changes
3.2 mm thinner case
Glycine
Combat Sub Vintage
- $1,750 recorded MSRP, $2,192 lower
- 42 mm case, 1 mm wider
- Both use automatic movements
What changes
2 mm thinner case
Damasko
DC58
- 40 mm case, 1 mm narrower
- Both use automatic movements
What changes
Lug-to-lug is not recorded for this match.
Orient
M-Force AC0N
- $555 recorded MSRP, $3,387 lower
- 45 mm case, 4 mm wider
- Both use automatic movements
What changes
1.7 mm thinner case
Pricier alternatives· 12
Matches in a higher price band. Check the specifications to decide whether the differences matter to you.
Breitling
Avenger B01 Chronograph
- 42 mm case, 1 mm wider
- Both use automatic movements
What changes
0.6 mm thicker case. $10,100 recorded MSRP, $6,158 higher
Omega
Seamaster Diver 300M Co Axial Master Chronometer Chronograph 44mm
- 44 mm case, 3 mm wider
- Both use automatic movements
What changes
2.7 mm thicker case. $9,200 recorded MSRP, $5,258 higher
Breitling
Chronomat B01 42
- 42 mm case, 1 mm wider
- Both use automatic movements
What changes
0.6 mm thicker case. $15,900 recorded MSRP, $11,958 higher
IWC Schaffhausen
IWC Aquatimer Chronograph
- 44 mm case, 3 mm wider
- Both use automatic movements
What changes
2.5 mm thicker case. $7,900 recorded MSRP, $3,958 higher
Breitling
Avenger B01 Chronograph 42 Night Mission America250
- 42 mm case, 1 mm wider
- Both use automatic movements
What changes
0.7 mm thicker case. $9,700 recorded MSRP, $5,758 higher
Omega
Seamaster Spectre Limited Edition Watch 210.83.42.20.01.001
- 42 mm case, 1 mm wider
- Both use automatic movements
What changes
0.2 mm thinner case
Blancpain
Bathyscaphe Chronographe Flyback
- 43 mm case, 2 mm wider
- Both use automatic movements
What changes
0.4 mm thicker case. $24,100 recorded MSRP, $20,158 higher
Omega
Seamaster Spectre Edition Watch 210.30.42.20.01.023
- 42 mm case, 1 mm wider
- Both use automatic movements
What changes
0.3 mm thinner case. $8,600 recorded MSRP, $4,658 higher
Blancpain
Bathyscaphe Chronographe Flyback
- 43 mm case, 2 mm wider
- Both use automatic movements
What changes
0.4 mm thicker case. $22,800 recorded MSRP, $18,858 higher
IWC Schaffhausen
Iw379502 Aquatimer Chronograph Edition Galapagos Islands
- 45 mm case, 4 mm wider
- Both use automatic movements
What changes
2.4 mm thicker case. $12,000 recorded MSRP, $8,058 higher
IWC Schaffhausen
Iw379503 Aquatimer Chronograph Edition Expedition Charles Darwin
- 44 mm case, 3 mm wider
- Both use automatic movements
What changes
2.4 mm thicker case. $12,000 recorded MSRP, $8,058 higher
Tudor
Black Bay Chrono S&G
- Same 41 mm case diameter
- Both use automatic movements
What changes
Lug-to-lug is not recorded for this match.
Homages & lookalikes· 11
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.
Addiesdive
37mm VK63 Racing Chronograph Quartz Watch AD2539
- $89 recorded MSRP, $3,853 lower
- 37 mm case, 4 mm narrower
What changes
Quartz movement instead of automatic. 1.8 mm thinner case
Addiesdive
37mm VK63/0S20 Triple-Register Chronograph Watch AD2517/AD2543
- $89 recorded MSRP, $3,853 lower
- 37 mm case, 4 mm narrower
What changes
Quartz movement instead of automatic. 1.8 mm thinner case
Addiesdive
40mm Blue Goldstone Dial VK64 Chronograph Watch AD2558
- $89 recorded MSRP, $3,853 lower
- 40 mm case, 1 mm narrower
What changes
Quartz movement instead of automatic. 1.5 mm thinner case
Pagani Design
PD-1819
- $157 recorded MSRP, $3,785 lower
- 40 mm case, 1 mm narrower
What changes
Quartz movement instead of automatic. 3.8 mm thinner case
Pagani Design
PD-1701
- $148 recorded MSRP, $3,794 lower
- 40 mm case, 1 mm narrower
What changes
Quartz movement instead of automatic. 0.5 mm thinner case
Pagani Design
PD-1644 Full Black
- $120 recorded MSRP, $3,822 lower
- 40 mm case, 1 mm narrower
What changes
Quartz movement instead of automatic. 2.5 mm thinner case
San Martin
San Martin Panda BB Chronograph Retro SN052
- $325 recorded MSRP, $3,617 lower
- 40 mm case, 1 mm narrower
- Both use automatic movements
What changes
Dimensions alone do not establish wrist fit.
San Martin
San Martin ST1901 Chronograp M57 Vintage SN0103
- $325 recorded MSRP, $3,617 lower
- 38.5 mm case, 2.5 mm narrower
- Both use automatic movements
What changes
Lug-to-lug is not recorded for this match.
Sugess
Chrono Heritage S438-2.0X
- $240 recorded MSRP, $3,702 lower
- Same 41 mm case diameter
What changes
Manual movement instead of automatic
Sugess
Chrono Heritage SUCHP005
- $240 recorded MSRP, $3,702 lower
- 40 mm case, 1 mm narrower
What changes
Manual movement instead of automatic. 1.5 mm thinner case
Sugess
Chrono Heritage SUCHP007
- $240 recorded MSRP, $3,702 lower
- 40 mm case, 1 mm narrower
What changes
Manual movement instead of automatic. 1.5 mm thinner case
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