Formex Reef 39.5 mm
Finding alternatives to

Formex Reef 39.5 mm

Ref. reef-39.5-automatic-chronometer-cosc-300m-bahama-blue

57 watches that match on case size, movement family, and price band. Sorted by how close the match is.

Case
39.5mm
Movement
Automatic
Category
Diver
MSRP
$2,230
The short answer

The closest alternative to the Formex Reef 39.5 mm is the Seiko Prospex Sea Seiko Prospex 1965 Heritage Diver’s Watch Save the Ocean Limited Edition ($1,400) — pro diver and Looks nearly identical. If price is the constraint, the Tissot Seastar 1000 at $875 (vs $2,230 for the Reef 39.5 mm) covers most of the same brief. From the independents, the Formex Reef 42 mm is the standout microbrand take — shared caliber (Sellita SW300-1) and Same family (Reef). Stepping up, the Tudor Pelagos ($6,025) is where the same idea goes with a bigger budget.

57 matches
Microbrand picks· 12

Independent makers covering the same brief — usually with something the mainstream brands don't.

Formex
Reef 42 mm
42mm · Automatic$2,414
Shared caliber (Sellita SW300-1) · Same family (Reef)
Phoibos
Apollo
39mm · Automatic$460
Pro diver · Looks nearly identical
Phoibos
Argo
40.5mm · Automatic$345
Pro diver · Looks nearly identical
Phoibos
Voyager
39mm · Automatic$299
Pro diver · Looks nearly identical
Maen
Hudson 38 MK4 SangHwal Edition
38mm · Automatic$503
Pro diver · Looks nearly identical
Oris
Aquis Date Calibre 400
41.5mm · Automatic$5,150
Pro diver · Looks nearly identical
Christopher Ward
C60 Sapphire Edge
40mm · Automatic$1,495
Pro diver · Looks nearly identical
Henry Archer
Tidevand
40mm · Automatic$5,299
Pro diver · Looks nearly identical
DOXA
SUB 250T GMT
40mm · Automatic$2,790
Pro diver · Looks nearly identical
Christopher Ward
C60 Trident GMT 300
40mm · Automatic$1,450
Pro diver · Looks nearly identical
DOXA
SUB 300
42.5mm · Automatic$2,890
Pro diver · Looks nearly identical
Nodus
Duality II
40mm · Automatic$875
Pro diver · Visually similar
Most similar· 12

The closest match overall — same case size, similar movement family, comparable price. Often the deciding click for a new buyer.

Seiko
Prospex Sea Seiko Prospex 1965 Heritage Diver’s Watch Save the Ocean Limited Edition
40mm · Automatic$1,400
Pro diver · Looks nearly identical
Seiko
Prospex Sea 1965 Heritage Diver's Save the Ocean Special Edition
40.5mm · Automatic$1,250
Pro diver · Looks nearly identical
Seiko
Prospex Sea 1965 Heritage Diver's Watch
40mm · Automatic$1,300
Pro diver · Looks nearly identical
Longines
HYDROCONQUEST
39mm · Automatic$2,350
Pro diver · Visually similar
Glycine
Combat Sub Sport
39mm · Automatic$1,850
Pro diver · Visually similar
Bremont
S300
40mm · Automatic$3,795
Pro diver · Visually similar
Citizen
Promaster Fujitsubo
41mm · Automatic$1,195
Pro diver · Visually similar
Bremont
The Meta Kronos
40mm · Automatic$3,145
Pro diver · Looks nearly identical
Longines
HYDROCONQUEST GMT
41mm · Automatic$3,350
Pro diver · Visually similar
Longines
HYDROCONQUEST
41mm · Automatic$2,000
Pro diver · Visually similar
Bremont
Supermarine 300M
40mm · Automatic$3,550
Pro diver · Automatic
Glycine
Combat Sub Sport Bronze
39mm · Automatic$1,650
Pro diver · 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.

Tissot
Seastar 1000
40mm · Automatic$875
Pro diver · Looks nearly identical
Seiko
Prospex Sea
41.3mm · Automatic$1,100
Pro diver · Looks nearly identical
Orient
75th Anniversary RA-AC0Q12L30B
39.9mm · Automatic$405
Pro diver · Looks nearly identical
Seiko
Prospex Sea Save the Ocean Special Edition
42.4mm · Automatic$550
Pro diver · Looks nearly identical
Hamilton
Khaki Navy Scuba Auto
40mm · Automatic$975
Pro diver · Looks nearly identical
Orient
Diver Watch
41.5mm · Automatic$285
Pro diver · Visually similar
Orient
Mako-3 AA08 Diver Watch
41.8mm · Automatic$375
Pro diver · Looks nearly identical
Seiko
Prospex Sea
41.7mm · Automatic$595
Pro diver · Looks nearly identical
Tissot
PR516
38mm · Automatic$825
Pro diver · Visually similar
Tissot
T-Race
41mm · Automatic$875
Looks nearly identical · Sunburst dial
Citizen
Tsuyosa Shore
40mm · Automatic$495
Pro diver · Automatic
Citizen
Promaster Diver Automatic
44mm · Automatic$469
Pro diver · Automatic
Pricier alternatives· 12

Where the same idea goes when budget isn't the constraint — luxury upgrades and step-ups.

Tudor
Pelagos
40mm · Automatic$6,025
Pro diver · Looks nearly identical
Tudor
Pelagos LHD
40mm · Automatic$6,025
Pro diver · Automatic
Tudor
Black Bay 54
37mm · Automatic$4,725
Pro diver · Visually similar
Seiko
Prospex Marinemaster Seiko Diver’s Watch 60th Anniversary Limited Edition
45.4mm · Automatic$4,600
Pro diver · Visually similar
Bell & Ross
BR 03-92 DIVER BLUE BRONZE SAPPHIRE BEZEL
42mm · Automatic$8,532
Pro diver · Visually similar
Grand Seiko
SBGH289
43.8mm · Automatic$7,700
Pro diver · Visually similar
Bremont
S502
43mm · Automatic$5,100
Pro diver · Visually similar
Bremont
Waterman Apex
43mm · Mechanical$5,350
Pro diver · Looks nearly identical
Grand Seiko
SLGB023
40.8mm · Spring Drive$12,400
Pro diver · Visually similar
Linde Werdelin
Biformeter Elemental – Black Dial
44mm · Automatic$5,206
Pro diver · Automatic
Seiko
Prospex LX line
44.8mm · Spring Drive$6,500
Pro diver · Visually similar
Bremont
Supermarine 500M
43mm · Automatic$4,700
Pro diver · Automatic
Looks like this· 9

Visually-adjacent picks pulled by the image-similarity engine. Quality varies — sometimes a true twin, sometimes just a rhyme.

Pagani Design
PD-1821
41mm · Automatic$137
Pro diver · Looks nearly identical
Pagani Design
PD-1691
39.7mm · Automatic$146
Tool diver · Looks nearly identical
Pagani Design
PD-1692
40mm · Automatic$137
Pro diver · Visually similar
Sugess
Ocean Star S450 YM
40mm · Automatic$449
Pro diver · Visually similar
Sugess
Seestern S430 Titanium Diver
40mm · Automatic$299
Pro diver · Looks nearly identical
Sugess
Seestern Vintage S407 600T
39mm · Automatic$249
Pro diver · Visually similar
Seestern
S471 Double Crown Diver
38mm · Automatic$179
Pro diver · Visually similar
Seestern
S450 Ocean Star
40mm · Automatic$299
Pro diver · Automatic
Seestern
Sub 300 V4
42mm · Automatic$10
Pro diver · Visually similar