Finding alternatives to
Sinn 903 St II
Ref. 903 St II
57 watches that match on case size, movement family, and price band. Sorted by how close the match is.
Case
41mm
Movement
Automatic
Category
Tool
MSRP
$3,942
ComplicationsDateChronograph
Most similar· 12
The closest match overall — same case size, similar movement family, comparable price. Often the deciding click for a new buyer.
Sinn
6099
41.5mm · Automatic$4,990
Shared caliber (LJP L110) · Shared: Date, Chronograph
Sinn
910 SRS
41.5mm · Automatic$4,158
Shared: Chronograph · Automatic
Sinn
6012
41.5mm · Automatic$5,929
Shared: Date, Chronograph · Automatic
Tudor
Black Bay Chrono
41mm · Automatic$7,000
Common cross-shop · Shared: Date, Chronograph
Bell & Ross
BR V2-94 R.S.18
41mm · Automatic$5,616
Shared: Date, Chronograph · Automatic
Norqain
Freedom Chrono Zermatt Unplugged Special Edition
40mm · Automatic$6,573
Shared: Chronograph · Automatic
Tudor
Pelagos FXD Chrono
43mm · Automatic$6,375
Common cross-shop · Shared: Chronograph
Tudor
Pelagos FXD GMT
42mm · Automatic$5,475
Common cross-shop · Automatic
Bell & Ross
BR-03 Chrono Rafale Solo Display
42mm · Automatic$6,804
Shared: Date, Chronograph · Automatic
Bremont
Blue / Green 40mm
40mm · Automatic$3,900
Common cross-shop · Automatic
Bremont
Date Green 40.5mm
40.5mm · Automatic$3,250
Common cross-shop · Automatic
Bell & Ross
BR V3-94 A521
43mm · Automatic$5,184
Shared: Date, Chronograph · Automatic
Cheaper alternatives· 12
If the price is the only thing keeping you off this watch, these get you most of the way there for less.
Glycine
Combat Sub Vintage
42mm · Automatic$1,750
Shared: Date · Automatic
Sinn
EZM 3F
41mm · Automatic$1,933
Shared: Date · Automatic
Glycine
Combat Sub
42mm · Automatic$1,850
Shared: Date · Automatic
Marathon
OD Green
41mm · Automatic$1,650
Automatic · Same size
Orient
AA02 Diver Watch
41.5mm · Automatic$285
Automatic · Same size
Orient
AC0Q-40 Diver Watch
39.9mm · Automatic$370
Shared: Date · Automatic
Glycine
Combat Sub Bronze
42mm · Automatic$1,650
Shared: Date · Automatic
Orient
Kamasu
41.8mm · Automatic$375
Automatic · Same size
Seiko
Prospex Sea
41.3mm · Automatic$1,100
Automatic · Same size
Seiko
Prospex Sea
41mm · Automatic$900
Automatic · Same size
Seiko
Prospex Sea 1968 Heritage Diver's GMT Watch
42mm · Automatic$1,700
Automatic · Same size
Hamilton
Jazzmaster Auto Chrono
42mm · Automatic$1,845
Automatic · Same size
Pricier alternatives· 12
Where the same idea goes when budget isn't the constraint — luxury upgrades and step-ups.
Tudor
Black Bay Chrono S&G
41mm · Automatic$8,525
Common cross-shop · Shared: Chronograph
Bell & Ross
BR-05 Chrono Patrouille de France
42mm · Automatic$8,100
Shared: Date, Chronograph · Automatic
Norqain
Independence Skeleton Chrono 42mm
42mm · Automatic$8,645
Shared: Chronograph · Automatic
Norqain
Wild ONE Skeleton Chrono 42mm Black
42mm · Automatic$10,611
Automatic · Same size
Norqain
Wild ONE Skeleton Chrono 42mm Red Gold Limited Edition
42mm · Automatic$27,900
Automatic · Same size
Sinn
6000 Roségold
38.5mm · Automatic$18,090
Shared: Date, Chronograph · Automatic
Bell & Ross
BR-05 Chrono Grey Steel & Gold
42mm · Automatic$15,336
Shared: Date, Chronograph · Automatic
Oris
Sun Wukong Artist Edition
41.5mm · Automatic$30,400
Shared: Date · Automatic
Bremont
Chronograph Bracelet
41mm · Automatic$8,250
Common cross-shop · Automatic
Bell & Ross
BR 03-92 DIVER BLUE BRONZE SAPPHIRE BEZEL
42mm · Automatic$8,532
Shared: Date · Automatic
Bremont
Blue
42mm · Automatic$38,450
Common cross-shop · Automatic
Sinn
1800 TITANDAMASZENER
43mm · Automatic$10,681
Shared: Date · Automatic
Looks like this· 9
Watches that wear the same design language — close enough that a stranger might confuse them across the room.
Sugess
Seestern S434 Pro Diver
40mm · Automatic$249
Shared: Date, Chronograph · Automatic
Sugess
Seestern Vintage S407 600T
39mm · Automatic$249
Shared: Date, Chronograph · Automatic
Sugess
Ocean Star S450 YM
40mm · Automatic$449
Shared: Date · Automatic
Pagani Design
PD-1685
42mm · Automatic$171
Automatic · Same size
Pagani Design
PD-1667
42mm · Automatic$162
Automatic · Same size
Pagani Design
PD-1726
40mm · Automatic$155
Automatic · Same size
Seestern
Sub 300 V4
42mm · Automatic$10
Shared: Date · Automatic
Seestern
S450 Ocean Star
40mm · Automatic$299
Shared: Date · Automatic
Seestern
S446 GMT
39.5mm · Automatic GMT$299
Shared: Date · Similar size
Microbrand picks· 12
Independent makers covering the same brief — usually with something the mainstream brands don't.
Traska
Freediver Arctic
40mm · Automatic$735
Shared: Date, Chronograph · Automatic
Oak & Oscar
The Humboldt 12-hr
39.5mm · Automatic$1,750
Shared: Date, Chronograph · Automatic
Echo/Neutra
1956 Chrono
40mm · Manual winding chronograph$2,060
Shared: Date, Chronograph · Same size
Islander
Islander Automatic GMT Dive Watch with Blue Waffle Dial #ISL-214
42mm · Automatic$499
Automatic · Same size
Spinnaker
Matte Black
42mm · Automatic$625
Automatic · Same size
Echo/Neutra
Cristallo Professional Diver 500m
42mm · Automatic$1,450
Shared: Date · Automatic
Gruppo Gamma
Field III GMT Date
40mm · Automatic$459
Shared: Date · Automatic
Oak & Oscar
The Ashland
39.5mm · Automatic$1,850
Shared: Date, Chronograph · Automatic
Oak & Oscar
The Humboldt Seven Year
39.5mm · Automatic$2,400
Shared: Date, Chronograph · Automatic
Boldr
Expedition II
41mm · Automatic$699
Automatic · Same size
Christopher Ward
C60 Sapphire Edge
40mm · Automatic$1,495
Shared: Date · Automatic
Spinnaker
Cobalt Blue
42mm · Automatic$159
Automatic · Same size