Side by side

Formex Reef 39.5 mmvsSugess Seestern S446 GMT

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
Seestern S446 GMT
SugessSeestern S446 GMT
MSRP $269

At a glance

13 of 29 specs differ
Diameter
Reef 39.5 mm39.5mm
Seestern S446 GMT40mm
Power Reserve
Reef 39.5 mm56h
Seestern S446 GMT41h
Water Resistance
Reef 39.5 mm300m
Seestern S446 GMT100m
MSRP
Reef 39.5 mm$2,230
Seestern S446 GMT$269

Full specifications

Case

6 specs
Category
Diver
GMT
Diameter
39.5mm
40mm
Thickness
11mm
10mm
Lug-to-Lug
45.5mm
47mm
Lug Width
22mm
19mm
Water Resistance
300m
100m

Crystal & Dial

2 specs
Dial Color
Bahama Blue
Black
Lume
Super-LumiNova
Tritium

Movement

4 specs
Caliber
Sellita SW300-1
Seiko NH34
Beat Rate
28,800 vph
3 vph
Power Reserve
56h
41h
Complications
None
GMT, Moonphase, Date

Pricing

1 specs
MSRP
$2,230
$269

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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.

Sugess Seestern S446 GMT

Owners widely praise the Sugess Seestern S446 GMT for its outstanding finishing and materials at its price point, with specific mentions of the cream or ivory dial, polished hands, and clear crystal offering superb legibility. Accuracy is generally good, with one owner reporting +2/3 seconds per day from the Seiko NH34A movement. Some owners find the lume is not a strong point, and the bracelet clasp could benefit from more micro-adjustment, with screw pins noted as cheap. The GMT hand is described as flat by some, and opinions are split on the "Sugess" versus "Seestern" logo. Overall, owners rate the Sugess Seestern S446 GMT highly for its beautiful dial and excellent build quality for the price.

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