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Omega Constellation Observatory Co Axial Master Chronometer 39 4mmvsGrand Seiko SBGY007

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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 SBGY007

Grand Seiko SBGY007 owners and reviewers widely praise its stunning, textured blue dial, inspired by frozen Lake Suwa, and its clean, time-only aesthetic. The watch is lauded for its impeccable finishing, including high polish and Zaratsu polishing, and its classic, thin 38.5mm stainless steel dress case. The hand-wound Spring Drive Caliber 9R31 movement is noted for its accuracy, rated to ±1 second per day, and a 72-hour power reserve, with its power reserve indicator discreetly placed on the case back. While some reviewers suggest room for improvement in Grand Seiko's pricing structure, the $8,300 USD price is seen by others as a relatively affordable entry into the brand's high-end offerings. On balance, the consensus is that the Grand Seiko SBGY007 is highly regarded for its exceptional dial artistry and refined finishing at its price point.

From video reviewers

The "Omiwatari" dial's texture and color are consistently praised. The manual-wind Spring Drive movement is a notable feature, though its convenience is debated.

At a glance

14 of 29 specs differ
Diameter
Constellation Observatory Co Axial Master Chronometer 39 4mm39.4mm
SBGY00738.5mm
Power Reserve
Constellation Observatory Co Axial Master Chronometer 39 4mm60h
SBGY00772h
Water Resistance
Constellation Observatory Co Axial Master Chronometer 39 4mm30m
SBGY00730m
MSRP
Constellation Observatory Co Axial Master Chronometer 39 4mm$37,900
SBGY007$8,900

Full specifications

Case

5 specs
Diameter
39.4mm
38.5mm
Thickness
12.23mm
10.2mm
Lug-to-Lug
47.2mm
43.7mm
Material
18kt Moonshine Gold
Stainless Steel
Finish
O-MEGASTEEL

Crystal & Dial

3 specs
Crystal Shape
Domed
AR Coating
Yes
Dial Color
Silver

Movement

5 specs
Caliber
Omega 8914
Grand Seiko 9R31
Type
Automatic
Spring Drive
Power Reserve
60h
72h
Hacking
Yes
No
Hand-winding
Yes
No

Pricing

1 specs
MSRP
$37,900
$8,900
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