Side by side

Sugess MoonPhase Master S437vsLongines HYDROCONQUEST

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

MoonPhase Master S437
SugessMoonPhase Master S437
MSRP $549
HYDROCONQUEST
LonginesHYDROCONQUEST
MSRP $2,000

At a glance

22 of 29 specs differ
Diameter
MoonPhase Master S43740mm
HYDROCONQUEST41mm
Power Reserve
MoonPhase Master S43748h
HYDROCONQUEST72h
Water Resistance
MoonPhase Master S43750m
HYDROCONQUEST300m
MSRP
MoonPhase Master S437$549
HYDROCONQUEST$2,000

Full specifications

Case

9 specs
Category
Chronograph
Diver
Diameter
40mm
41mm
Thickness
13.5mm
11.9mm
Lug-to-Lug
47.8mm
53.5mm
Lug Width
22mm
21mm
Material
Stainless Steel/Rose Gold
Ceramic
Finish
Brushed and polished
Water Resistance
50m
300m
Caseback
Display

Crystal & Dial

5 specs
Crystal Shape
Flat
AR Coating
Inner
Dial Color
White
Green
Indices
Applied
Lume
X1
None

Movement

7 specs
Caliber
ST2528
L888.5
Beat Rate
28,800 vph
0 vph
Power Reserve
48h
72h
Jewels
25
0
Hacking
Yes
No
Hand-winding
Yes
No
Complications
Moonphase, Date
None

Pricing

1 specs
MSRP
$549
$2,000

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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.

Longines HYDROCONQUEST

Owners widely praise the Longines Hydroconquest for its attractive sunburst blue dial and accurate timekeeping, with one owner reporting a loss of only 2 seconds per day. However, the bracelet is frequently criticized for lacking micro-adjustments and having pinch-prone links, and the screw-down crown is noted as inconvenient and difficult to operate by multiple owners. Some owners also flag the bezel action as ratchety with back play, and one owner found the lugs sharp and the overall design uncomfortable, leading them to sell the watch. On balance, owners appreciate the Longines Hydroconquest's aesthetic appeal and value, despite significant reservations about its bracelet and crown usability.

From video reviewers

The bezel action is praised for its smooth and precise rotation. Lume brightness is a shared weakness, found to be somewhat lacking. Reviewers disagreed on the watch's value proposition compared to alternatives.

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