
Finding alternatives to
Orient AC0Q-40 Diver Watch
Ref. ra-ac0q01b30b
45 watches that match on case size, movement family, and price band. Sorted by how close the match is.
Case
39.9mm
Movement
Automatic
Category
Tool
MSRP
$370
ComplicationsDate
Most similar· 12
The closest match overall — same case size, similar movement family, comparable price. Often the deciding click for a new buyer.

Orient
RA-AC0K Diver Watch
43.4mm · Automatic$455
Shared caliber (F6722) · Same family (Diver)

Orient
75th Anniversary RA-AC0Q12L30B
39.9mm · Automatic$405
Shared caliber (F6722) · Shared: Date

Orient
Peanuts 75th Anniversary Limited Edition Diver
39.9mm · Automatic$435
Shared caliber (F6722) · Shared: Date

Seiko
Prospex Sea
41.7mm · Automatic$595
Common cross-shop · Automatic

Seiko
Prospex Sea PADI Special Edition
41.7mm · Automatic$650
Common cross-shop · Automatic

Seiko
Prospex Sea
42mm · Automatic0
Common cross-shop · Automatic

Citizen
Tsuyosa Shore
40mm · Automatic$495
Common cross-shop · Automatic

Tudor
Black Bay
41mm · Automatic0
Automatic · Similar size

Citizen
Tsuyosa Automatic
40mm · Automatic$356
Common cross-shop · Automatic

Citizen
Promaster Diver Automatic
44mm · Automatic$469
Common cross-shop · Automatic

Marathon
Black
41mm · Automatic$600
Common cross-shop · Automatic

Hamilton
Khaki Field Mechanical
36mm · Manual$725
Common cross-shop · Visually similar
Pricier alternatives· 12
Where the same idea goes when budget isn't the constraint — luxury upgrades and step-ups.

Glycine
Combat Sub Box Ceramic
41mm · Automatic$1,800
Common cross-shop · Shared: Date

Seiko
Prospex Marinemaster Marinemaster 1965 Heritage Diver's Watch
39.5mm · Automatic$2,800
Common cross-shop · Automatic

Glycine
Combat Sub Sport
39mm · Automatic$1,850
Common cross-shop · Shared: Date

Seiko
62MAS
40.5mm · Automatic$1,200
Common cross-shop · Automatic

Tissot
Seastar 1000
40mm · Automatic$875
Common cross-shop · Automatic

Glycine
Combat Sub Vintage
42mm · Automatic$1,750
Common cross-shop · Shared: Date

Seiko
Prospex Sea
41.3mm · Automatic$1,100
Common cross-shop · Automatic

Hamilton
Khaki Navy Scuba Auto
40mm · Automatic$975
Common cross-shop · Automatic

Oris
Divers Sixty‑Five 12h Calibre 400
40mm · Automatic$4,300
Shared: Date · Automatic

Sinn
105 St Sa UTC
41mm · Automatic$1,998
Shared: Date · Automatic

Tissot
Seastar Wilson WNBA
40mm · Automatic$875
Common cross-shop · Automatic

Sinn
6060
38.5mm · Automatic$3,056
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.

Pagani Design
PD-1692 II
40mm · Automatic$125
Common cross-shop · Automatic

Sugess
Ocean Star S450 YM
40mm · Automatic$449
Shared: Date · Automatic

Sugess
Seestern 62MAS V3
39mm · Automatic$199
Shared: Date · Automatic

Sugess
Seestern S456 GMT
40mm · Automatic GMT$299
Shared: Date · Same size

Pagani Design
PD-1783
40mm · Automatic$175
Common cross-shop · Automatic

Pagani Design
PD-1692
40mm · Automatic$137
Common cross-shop · Automatic

Seestern
S450 Ocean Star
40mm · Automatic$299
Shared: Date · Automatic

Seestern
Sub 300 V4
42mm · Automatic$10
Shared: Date · Automatic

Seestern
S446 GMT
39.5mm · Automatic GMT$299
Shared: Date · Same size
Microbrand picks· 12
Independent makers covering the same brief — usually with something the mainstream brands don't.

Vaer
Black
39mm · Automatic$679
Common cross-shop · Automatic

Gruppo Gamma
Field III GMT Date
40mm · Automatic$459
Common cross-shop · Shared: Date

Yema
Black
39.5mm · Automatic$990
Common cross-shop · Same family (Diver)

Christopher Ward
C60 Trident Pro 300
40mm · Automatic$1,095
Common cross-shop · Shared: Date

Traska
Freediver Arctic
40mm · Automatic$735
Shared: Date · Automatic

Christopher Ward
C60 Atoll 300
40mm · Automatic$1,320
Common cross-shop · Shared: Date

Lorier
Standard
39mm · Automatic$699
Common cross-shop · Automatic

Yema
39.5mm Automatic
39.5mm · Automatic$1,777
Common cross-shop · Automatic

Echo/Neutra
1956 3H
40mm · Automatic$1,025
Common cross-shop · Shared: Date

Vaer
Standard
39mm · Automatic$699
Common cross-shop · Automatic

Yema
Black
39.5mm · Automatic$2,372
Common cross-shop · Automatic

Astor + Banks
Tobacco
40mm · Automatic$1,149
Common cross-shop · Automatic