Omega Seamaster Diver 300M Co Axial Master Chronometer 42mmvsRatio FreeDiver Professional Sapphire RTF


Ref. ratio-freediver-professional-sapphire-blue-sunray-dial-automatic-rtf0013-500m-mens-watch·MSRP $140
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Measurements
Catalog photos are all shot at the same flattering size. These aren't: every case below shares one millimeter scale.

Seamaster Diver 300M Co Axial Master Chronometer 42mm

FreeDiver Professional Sapphire RTF
Diameter
42mm
42mm
Lug-to-Lug
49.9mm
n/a
Thickness
13.6mm
lowest
15.5mm
Water Resistance
300m
500m
highest
Power Reserve
55h
n/a
MSRP
$9,600
$140
lowest
Movement
Omega 8800
Miyota 8215
Case
5 specsCrystal & Dial
2 specsMovement
4 specsPricing
1 specsReviews
Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.
Owners widely praise the Omega Seamaster Diver 300M Co Axial Master Chronometer 42mm for its versatile design that bridges toolish and elegant aesthetics, its comfortable wearability despite its dimensions, and the smooth quality of its automatic Omega 8800 movement. Reviewers highlight the updated technology and materials, excellent legibility with large hands and markers, and the combination of polished and brushed finishing. Some owners note the green dial is exceptionally versatile, while others find the black dial less striking than expected and the hour markers could be brighter. The helium release valve is seen by some as unnecessary visual clutter, and one owner found the strap design outdated. The 42mm size and 13.7mm thickness are considered well-proportioned by reviewers. On balance, owners and reviewers rate the Omega Seamaster Diver 300M Co Axial Master Chronometer 42mm highly for its versatile design and robust build quality.
Owners widely praise the Ratio FreeDiver Professional Sapphire RTF for its exceptional value for money. The watch is noted for its quality construction, with bezels described as having a great feel and minimal back play. One owner highlights an Abyss black dial, sapphire crystal with AR coating, and screw-down crown, built for daily wear with 200m water resistance. On balance, the consensus is that the Ratio FreeDiver Professional Sapphire RTF is a highly recommended watch due to its impressive quality and great price point.
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