Side by side

Sugess MoonPhase Master S437vsSpinnaker Fleuss 40 Automatic

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

MoonPhase Master S437
SugessMoonPhase Master S437
MSRP $549
Fleuss 40 Automatic
SpinnakerFleuss 40 Automatic
MSRP $450

At a glance

13 of 29 specs differ
Diameter
MoonPhase Master S43740mm
Fleuss 40 Automatic40mm
Power Reserve
MoonPhase Master S43748h
Fleuss 40 Automatic40h
Water Resistance
MoonPhase Master S43750m
Fleuss 40 Automatic150m
MSRP
MoonPhase Master S437$549
Fleuss 40 Automatic$450

Full specifications

Case

7 specs
Category
Chronograph
Diver
Thickness
13.5mm
11mm
Lug-to-Lug
47.8mm
47mm
Lug Width
22mm
20mm
Material
Stainless Steel/Rose Gold
316L Stainless Steel
Water Resistance
50m
150m
Caseback
Display
Solid

Crystal & Dial

2 specs
Dial Color
White
Coral
Lume
X1
None

Movement

3 specs
Caliber
ST2528
SII NH35A
Power Reserve
48h
40h
Complications
Moonphase, Date
None

Pricing

1 specs
MSRP
$549
$450

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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 S437

Owners widely praise the Sugess MoonPhase Master S437 for its striking dial, often described as deep blue or aventurine, and its value, with prices around $171-$175. The Seagull ST1908 movement is noted as accurate, with one owner reporting +3 seconds over 18 hours and another +7 seconds daily, and its hand-winding action is smooth. However, the watch's thickness, potentially over 13mm, is a concern for some as a dress watch, and the long lugs may pose a fit issue on smaller wrists. A potential design flaw in the moonphase window, showing two phases simultaneously, is flagged as a deal-breaker by some. The included leather straps are considered stiff and uncomfortable, and the domed sapphire crystal lacks AR coating, leading to reflections. On balance, owners rate the Sugess MoonPhase Master S437 highly for its stunning dial and value, despite some fit and finishing concerns.

Spinnaker Fleuss 40 Automatic

Owners find the Spinnaker Fleuss 40 Automatic a good size for smaller wrists, though one owner notes the lume is too diffuse for easy nighttime reading. The pilot-style crown is an unusual feature for a dive watch. Overall, owners value the Spinnaker Fleuss 40 Automatic for its wearability on smaller wrists.

From video reviewers

The coral red dial is a unique aesthetic. The watch is a strong contender for best-in-class under $300.

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