Side by side

Sugess MoonPhase Master S437vsSpinnaker Spence 300

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

MoonPhase Master S437
SugessMoonPhase Master S437
MSRP $549
Spence 300
SpinnakerSpence 300
MSRP $650

At a glance

13 of 29 specs differ
Diameter
MoonPhase Master S43740mm
Spence 30040mm
Power Reserve
MoonPhase Master S43748h
Spence 30040h
Water Resistance
MoonPhase Master S43750m
Spence 300300m
MSRP
MoonPhase Master S437$549
Spence 300$650

Full specifications

Case

7 specs
Category
Chronograph
Diver
Thickness
13.5mm
11.5mm
Lug-to-Lug
47.8mm
48mm
Lug Width
22mm
20mm
Material
Stainless Steel/Rose Gold
316L Stainless Steel
Water Resistance
50m
300m
Caseback
Display
Solid

Crystal & Dial

2 specs
Dial Color
White
Aquamarine
Lume
X1
None

Movement

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

Pricing

1 specs
MSRP
$549
$650

Follow this matchup

Get a note when Sugess MoonPhase Master S437 vs Spinnaker Spence 300 gets more votes, a community discussion, or a price drop. No account needed.

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 Spence 300

The Spinnaker Spence 300 is widely praised for its slim 10.9mm case and 40mm diameter, offering a comfortable and uncommon thin diver design at its price point. Reviewers and owners highlight its value, especially below $350, and its blend of retro design with modern specifications, including a 300m depth rating and a fully indexed bezel. Some owners, however, find the dial printing and bracelet finishing to be less refined, with one noting the bracelet's male end links as a drawback. The consensus is that the Spinnaker Spence 300 is highly regarded for its exceptional value and wearable dimensions, making it a strong contender for an everyday sports watch.

Keep exploring

More watches worth a look

Matched to the watches above on size, movement, style and price — microbrands first. Open any one to dig in.

Adjacent matchups

People also compared

Comparisons nearby in the catalog — alternatives to the watches above paired against the matchup.