Ratio FreeDiver Professional Sapphire RTFvsSeiko DressKX

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.

Ratio FreeDiver Professional Sapphire RTF at true scale

FreeDiver Professional Sapphire RTF

Seiko DressKX at true scale

DressKX

Diameter

42mm

40mm

Lug-to-Lug

n/a

44.6mm

Thickness

15.5mm

11.5mm

lowest

Water Resistance

500m

highest

100m

Power Reserve

n/a

41h

MSRP

$140

lowest

$315

Movement

Miyota 8215

Seiko 4R36

Case

5 specs
Category
Diver
Sport
Diameter
42mm
40mm
Thickness
15.5mm
11.5mm
Lug-to-Lug
n/a
44.6mm
Water Resistance
500m
100m

Crystal & Dial

2 specs
Crystal
Sapphire
Hardlex
Lume
None
LumiBrite on hands and index(es)

Movement

3 specs
Caliber
Miyota 8215
Seiko 4R36
Power Reserve
0h
41h
Jewels
0
24

Pricing

1 specs
MSRP
$140
$315
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Reviews

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

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.

Seiko DressKX

Owners widely report the Seiko DressKX offers excellent value and a comfortable 22mm bracelet. Accuracy with the 4R36 movement is variable, with most owners experiencing +/-5 to 10 seconds per day, though the movement's official tolerance is +/-40 seconds per day. Some owners have noted component failures like bezel issues or misaligned parts, while others praise its accuracy. The Seiko DressKX is seen by some as a less serious tool watch than its predecessor due to the lack of a screw-down crown and ISO rating, though others prefer its modern features and warranty. Overall, owners rate the Seiko DressKX highly for its value and comfortable bracelet, despite variable accuracy.

From video reviewers

The clean dial and versatile dressy look are praised. The overall thickness and handset are points of contention.