Side by side

Formex Reef 39.5 mmvsDOXA SUB 300T

The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.

Reef 39.5 mm
FormexReef 39.5 mm
MSRP $2,230
SUB 300T
DOXASUB 300T
MSRP $2,190

At a glance

10 of 29 specs differ
Diameter
Reef 39.5 mm39.5mm
SUB 300T42.5mm
Power Reserve
Reef 39.5 mm56h
SUB 300T40h
Water Resistance
Reef 39.5 mm300m
SUB 300T1,200m
MSRP
Reef 39.5 mm$2,230
SUB 300T$2,190

Full specifications

Case

5 specs
Diameter
39.5mm
42.5mm
Thickness
11mm
12mm
Lug-to-Lug
45.5mm
46mm
Lug Width
22mm
20mm
Water Resistance
300m
1200m

Crystal & Dial

2 specs
AR Coating
Inner
Yes
Dial Color
Bahama Blue
Aquamarine

Movement

2 specs
Caliber
Sellita SW300-1
Power Reserve
56h
40h

Pricing

1 specs
MSRP
$2,230
$2,190

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What people say

Owners + reviewers, side by side

Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.

Formex Reef 39.5 mm

The Formex Reef 39.5 mm is widely praised for its refined finishing, comfortable and well-proportioned case design, and impressive specifications for its price point, including COSC-certified Sellita SW300-1 movement and 300m water resistance. Owners and reviewers highlight the tool-less micro-adjust clasp and quick-release spring bars as practical features. Some reviewers note that the 22mm lug width feels slightly disproportionate to the smaller case, and the bracelet could benefit from more taper, though this is a point of contention for some owners who value the overall package. A prototype crown protrusion issue is noted as being addressed for production. On balance, owners and reviewers rate the Formex Reef 39.5 mm highly for its excellent value and well-executed design.

DOXA SUB 300T

Owners widely praise the DOXA SUB 300T's functional and distinctive design, with reviewers highlighting its historical visibility and robust build. Legibility is consistently noted as excellent, with reviewers appreciating the functional no-decompression bezel and distinct hand shapes. The watch's accuracy is reported as good, with one owner seeing a 3-4 second daily gain, though the 38-hour power reserve is considered underwhelming by some at its price point. Criticisms include a stamped clasp that feels out of place and a bezel that may have lateral movement. The 42.5mm case is described as substantial and heavy, appearing larger due to extra width and making it unsuitable for dress shirts, a trade-off for its 1200-meter water resistance. On balance, owners and reviewers rate the DOXA SUB 300T highly for its unique design and robust dive watch capabilities.

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