Side by side

Sugess MoonPhase Master S389vsFormex Reef GMT

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

MoonPhase Master S389
SugessMoonPhase Master S389
MSRP $599
Reef GMT
FormexReef GMT
MSRP $2,235

At a glance

15 of 29 specs differ
Diameter
MoonPhase Master S38940mm
Reef GMT42mm
Power Reserve
MoonPhase Master S38935h
Reef GMT56h
Water Resistance
MoonPhase Master S38950m
Reef GMT300m
MSRP
MoonPhase Master S389$599
Reef GMT$2,235

Full specifications

Case

7 specs
Category
Chronograph
GMT
Diameter
40mm
42mm
Thickness
12mm
11.4mm
Lug-to-Lug
46mm
47mm
Lug Width
20mm
22mm
Water Resistance
50m
300m
Caseback
Display
Solid

Crystal & Dial

2 specs
Dial Color
2 Salmon
Black
Lume
Tritium
Super-LumiNova

Movement

5 specs
Caliber
Seagull ST19
Sellita SW330-2
Type
Manual
Automatic
Beat Rate
3 vph
28,800 vph
Power Reserve
35h
56h
Complications
GMT, Chronograph, Moonphase, Date
None

Pricing

1 specs
MSRP
$599
$2,235

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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.

Sugess MoonPhase Master S389

Owners widely praise the Sugess MoonPhase Master S389 for its beautiful dial and glowing moonphase, with some finding it a stunner that exceeds expectations and a bargain for the price. However, reviewers and owners alike flag rotor noise and thickness as potential drawbacks, and one owner reported receiving a defective unit. Accuracy is reported at -6 seconds per day, and while the dial features applied markers and polished hands, the movement finishing is noted as rough under magnification. Overall, owners rate the Sugess MoonPhase Master S389 highly for its aesthetic appeal and value, despite some concerns regarding rotor noise and build quality consistency.

Formex Reef GMT

The Formex Reef GMT is widely praised for its unique porthole case shape, COSC-certified Sellita SW330-2 movement with good finishing, and comfortable quick-release bracelet with on-the-fly micro-adjustment. Reviewers note its robust construction, impressive specifications, and strong value proposition, with a slim 11.4mm profile accommodating 300m water resistance and an exhibition caseback. However, owners widely report the 53mm lug-to-lug span with male endlinks makes it too large for smaller wrists. Some find the bezel action stiff and potentially slippery, and a reviewer desired sharper finishing and edges, deeming the aesthetic too modernist. The GMT variant sacrifices a timing bezel unless swapped, and one owner notes sharp edges on the crown and crown guard. Overall, owners and reviewers highly rate the Formex Reef GMT for its exceptional value and well-executed features, particularly its bracelet system and COSC-certified movement.

From video reviewers

The watch features a COSC-certified SW330-2 GMT movement, which is visible through a sapphire crystal display case back and beautifully decorated. The watch's water-resistance of up to 300m/1000ft is a notable feature. The 42mm diameter may be too large for smaller wrists.

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