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

FreeDiver Professional Sapphire RTF
RatioFreeDiver 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.

Omega Seamaster Diver 300M Co Axial Master Chronometer 42mm at true scale

Seamaster Diver 300M Co Axial Master Chronometer 42mm

Ratio FreeDiver Professional Sapphire RTF at true scale

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 specs
Thickness
13.56mm
15.5mm
Lug-to-Lug
49.9mm
n/a
Material
Steel & Yellow Gold
Stainless Steel
Finish
Steel
n/a
Water Resistance
300m
500m

Crystal & Dial

2 specs
Crystal Shape
Domed
n/a
Dial Color
Black
n/a

Movement

4 specs
Caliber
Omega 8800
Miyota 8215
Power Reserve
55h
0h
Hacking
Yes
No
Hand-winding
Yes
No

Pricing

1 specs
MSRP
$9,600
$140
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Reviews

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

Omega Seamaster Diver 300M Co Axial Master Chronometer 42mm

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 The helium release valve is seen by some as unnecessary visual clutter, and one owner found the strap design outdated.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.

Ratio FreeDiver Professional Sapphire RTF

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.