Side by side

Omega Constellation Co Axial Master ChronometervsGrand Seiko SBGR321

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

Constellation Co Axial Master Chronometer
OmegaConstellation Co Axial Master Chronometer
MSRP $23,100
SBGR321
Grand SeikoSBGR321
MSRP $5,200
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 Co Axial Master Chronometer

Owners widely praise the Omega Constellation Co Axial Master Chronometer as an underrated model and a potential heirloom, citing its handsome, well-built nature and refined yet sporty design. One owner notes that Omega does not offer alternative straps, and aftermarket options may not fit due to the Constellation's notched design. The watch features an automatic Omega 8700 movement and 50m water resistance. Overall, owners and reviewers consider the Omega Constellation Co Axial Master Chronometer a well-built, elegant timepiece that is highly regarded as a potential heirloom.

Grand Seiko SBGR321

Grand Seiko SBGR321 owners and reviewers widely praise its attractive design, compelling dimensions, and robust movement. The watch features sharp case lines with contrasting brushing and polishing, a 40mm steel case that provides presence without bulk, and 100m water resistance. Its sunburst blue dial, inspired by the dawn sky over Mount Iwate, showcases Grand Seiko's signature finishing on applied markers and hands, with a red-tipped seconds hand. The 9S65 automatic movement is noted for its precision, running within specifications, with one source reporting a +5 to -3 seconds a day rate and a 3-day power reserve. A blue rotor with a crimson rim, also inspired by Mount Iwate, is visible through the display caseback. On balance, owners and reviewers rate the Grand Seiko SBGR321 highly for its exceptional finishing and compelling blue dial design at its price point.

At a glance

17 of 29 specs differ
Diameter
Constellation Co Axial Master Chronometer29mm
SBGR32140mm
Power Reserve
Constellation Co Axial Master Chronometer50h
SBGR32172h
Water Resistance
Constellation Co Axial Master Chronometer50m
SBGR321100m
MSRP
Constellation Co Axial Master Chronometer$23,100
SBGR321$5,200

Full specifications

Case

8 specs
Diameter
29mm
40mm
Thickness
12mm
13mm
Lug-to-Lug
31.2mm
46.6mm
Lug Width
20mm
Material
18kt Sedna Gold
Stainless Steel
Finish
Steel
Brushed and polished
Water Resistance
50m
100m
Caseback
Solid

Crystal & Dial

4 specs
Crystal Shape
Domed
Flat
AR Coating
Yes
Dial Color
Silver
Black
Indices
Applied

Movement

4 specs
Caliber
Omega 8700
9S65
Beat Rate
0 vph
28,800 vph
Power Reserve
50h
72h
Jewels
0
25

Pricing

1 specs
MSRP
$23,100
$5,200
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