Side by side

Spinnaker Cahill AutomaticvsSugess MoonPhase Master SU2108

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

Cahill Automatic
SpinnakerCahill Automatic
MSRP $350
MoonPhase Master SU2108
SugessMoonPhase Master SU2108
MSRP $549

At a glance

16 of 29 specs differ
Diameter
Cahill Automatic42mm
MoonPhase Master SU210840mm
Power Reserve
Cahill Automatic40h
MoonPhase Master SU210841h
Water Resistance
Cahill Automatic200m
MoonPhase Master SU21085m
MSRP
Cahill Automatic$350
MoonPhase Master SU2108$549

Full specifications

Case

9 specs
Category
Diver
Chronograph
Diameter
42mm
40mm
Thickness
13.7mm
11.5mm
Lug-to-Lug
51mm
46mm
Lug Width
22mm
20mm
Material
316L Stainless Steel
Stainless Steel/Gold
Finish
Brushed and polished
Polished
Water Resistance
200m
5m
Caseback
Solid
Display

Crystal & Dial

1 specs
Dial Color
Green
S438 White

Movement

5 specs
Caliber
SII NH35A
Seagull ST21
Beat Rate
28,800 vph
4 vph
Power Reserve
40h
41h
Jewels
25
21
Complications
None
GMT, Moonphase, Date

Pricing

1 specs
MSRP
$350
$549

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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.

Spinnaker Cahill Automatic

Owners widely praise the Spinnaker Cahill Automatic for its attractive vintage-inspired design, comfortable wearability on smaller wrists, and good timekeeping, with one owner specifically noting the large "maxi" indices and NATO strap as highlights. However, some find the lume application uneven and note the use of a mineral crystal. A significant concern raised by one owner is a report of internal component failures and a perceived lack of quality control within the brand. On balance, the Spinnaker Cahill Automatic is well-regarded by owners for its style and value, particularly at specific price points, despite some noted manufacturing inconsistencies.

Sugess MoonPhase Master SU2108

Owners widely praise the Sugess MoonPhase Master SU2108 for its gorgeous, affordable dress watch aesthetic, intricate dial details, and elegant rose gold finish. Reviewers note a well-decorated Seagull ST2108 movement averaging +7 seconds daily, a lumed moonphase, applied Roman numerals, and a multi-textured dial. However, some owners find the 40mm diameter and 50mm lug-to-lug too large for smaller wrists, and the polished blue hands can make quick time-telling difficult. Criticisms also include a date hand that obscures numerals, a domed sapphire crystal lacking AR coating, and stiff stock straps. On balance, owners rate the Sugess MoonPhase Master SU2108 highly for its elegant design and value in the affordable dress watch segment.

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