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Omega Speedmaster Moonphase Co Axial Master Chronometer Moonphase Chronograph 44 25mmvsGrand Seiko SLGC006

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

What people say

Owners + reviewers, side by side

Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.

Omega Speedmaster Moonphase Co Axial Master Chronometer Moonphase Chronograph 44 25mm

Owners widely praise the Omega Speedmaster Moonphase Co Axial Master Chronometer Moonphase Chronograph 44 25mm for its stunning, photorealistic moonphase complication, often highlighting the detail of the boot print on the moon. Reviewers and owners alike note the watch's excellent finishing, with a ceramic bezel and sun-brushed dial that are described as popping in sunlight. The chronograph buttons are also singled out for their buttery feel. However, the watch's 44.25mm case size and significant thickness (around 16.85mm to 17mm) are frequently mentioned as making it wear large and potentially challenging to fit under a dress cuff, with some suggesting it feels like a "beast" or "chunky." One owner found the crown guards sharp when winding and the crown difficult to pull out.

Grand Seiko SLGC006

Owners widely praise the Grand Seiko SLGC006's stunning copper Mount Iwate dial and its high-frequency Caliber 9SC5 movement, which operates at 36,000vph and achieves accuracy between -3/+5 seconds per day with a 72-hour power reserve. Reviewers note the watch's large 43.2mm size, though some find the Evolution 9 case design improves wearability. Criticisms include the $22,600 price point, the 4:30 date window placement, and the lack of bracelet micro-adjustment. Opinions on the dial are split, with some finding it beautiful and others comparing it to rust or the Australian outback. Some question the extent of the gold accents for a "two-tone" designation. Overall, owners and reviewers acknowledge the Grand Seiko SLGC006's striking aesthetics and advanced movement, but debate its value proposition and certain design choices.

At a glance

15 of 29 specs differ
Diameter
Speedmaster Moonphase Co Axial Master Chronometer Moonphase Chronograph 44 25mm44.25mm
SLGC00643.2mm
Power Reserve
Speedmaster Moonphase Co Axial Master Chronometer Moonphase Chronograph 44 25mm60h
SLGC00672h
Water Resistance
Speedmaster Moonphase Co Axial Master Chronometer Moonphase Chronograph 44 25mm100m
SLGC006100m
MSRP
Speedmaster Moonphase Co Axial Master Chronometer Moonphase Chronograph 44 25mm$42,400
SLGC006$22,600

Full specifications

Case

6 specs
Diameter
44.25mm
43.2mm
Thickness
16.85mm
15.4mm
Lug-to-Lug
50mm
51.5mm
Lug Width
21mm
23mm
Material
18kt Sedna Gold
Gold
Finish
Steel

Crystal & Dial

3 specs
Crystal Shape
Domed
AR Coating
Yes
Dial Color
Black

Movement

5 specs
Caliber
Omega 9904
9SC5
Power Reserve
60h
72h
Hacking
Yes
No
Hand-winding
Yes
No
Complications
Chronograph, Moonphase
None

Pricing

1 specs
MSRP
$42,400
$22,600
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