Side by side

Omega Constellation Observatory Co Axial Master Chronometer 39 4mmvsGrand Seiko SBGD202

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

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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.

Omega Constellation Observatory Co Axial Master Chronometer 39 4mm

Owners widely praise the Omega Constellation Observatory Co Axial Master Chronometer 39 4mm for its fantastic presence and discreet elegance, finding it suitable for both suits and casual wear. Reviewers highlight its reinterpretation of vintage design with a pie-pan dial, dog-leg lugs, and kite-shaped hands and indexes, noting its certification as a Master Chronometer. Some owners find the case thick and the lugs awkward, while others prefer its clean design and unique details over other models. One owner wishes to switch straps but notes Omega does not sell alternatives. On balance, owners and reviewers appreciate the Omega Constellation Observatory Co Axial Master Chronometer 39 4mm for its elegant design and Master Chronometer certification, despite some reservations about case thickness and lug design.

Grand Seiko SBGD202

The Grand Seiko SBGD202 is widely lauded for its mesmerizing "Starlight" or "stardust" dial, achieved through a new plating and painting technique, and its exceptional craftsmanship, which reviewers compare favorably to high-end Swiss and German brands. The manual-wind Caliber 9R01 Spring Drive movement offers an 8-day power reserve and impressive accuracy up to 0.5 seconds per day, with an independent hour hand setting. However, some owners find the movement finishing on the display back to be plain. The SBGD202 is priced at 52,800 Euros. On balance, the consensus is that the Grand Seiko SBGD202 is a highly beautiful three-hand watch, with its dial and movement accuracy being the primary reasons for its acclaim.

At a glance

16 of 29 specs differ
Diameter
Constellation Observatory Co Axial Master Chronometer 39 4mm39.4mm
SBGD20243mm
Power Reserve
Constellation Observatory Co Axial Master Chronometer 39 4mm60h
SBGD202192h
Water Resistance
Constellation Observatory Co Axial Master Chronometer 39 4mm30m
SBGD202100m
MSRP
Constellation Observatory Co Axial Master Chronometer 39 4mm$37,900
SBGD202

Full specifications

Case

7 specs
Diameter
39.4mm
43mm
Thickness
12.23mm
13.2mm
Lug-to-Lug
47.2mm
51.8mm
Lug Width
19mm
22mm
Material
18kt Moonshine Gold
Gold
Finish
O-MEGASTEEL
Water Resistance
30m
100m

Crystal & Dial

3 specs
Crystal Shape
Domed
AR Coating
Yes
Dial Color
Silver

Movement

5 specs
Caliber
Omega 8914
Grand Seiko 9R01
Type
Automatic
Spring Drive
Power Reserve
60h
192h
Hacking
Yes
No
Hand-winding
Yes
No

Pricing

1 specs
MSRP
$37,900
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