Isotope FlywayvsSeiko King Seiko KSK
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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.
Flyway
King Seiko KSK
Diameter
36mm
36.1mm
Lug-to-Lug
42mm
lowest
43mm
Thickness
12.3mm
11.6mm
lowest
Water Resistance
100m
100m
Power Reserve
68h
72h
highest
MSRP
$1,708
lowest
$1,900
Movement
La Joux-Perret G101
Seiko 6R51
Case
4 specsCrystal & Dial
4 specsMovement
3 specsPricing
1 specsReviews
Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.
Owners appreciate the Isotope Flyway's design, with one owner calling it a good introduction to microbrands. However, opinions are split on the bezel; one reviewer finds the Clous de Paris bezel breaks the design language, while one owner considers it too fancy. Overall, owners and reviewers find the Isotope Flyway appealing for its design, despite differing views on the bezel's aesthetic.
The 36mm case size is cited as a strength for wearability. The Landeron automatic movement is mentioned as a notable feature. No shared weaknesses were identified.
Owners widely praise the Seiko King Seiko KSK's refined finishing, with polishing on par with Grand Seiko, and its dial, hands, and indices are noted for their execution. The watch is described as wearing smaller than its listed size, with a cushion case contributing to a comfortable, close-to-the-wrist feel. Some owners find the watch overpriced for its movement, with one noting misaligned caseback and clasp screws, while others defend the price based on finishing, bracelet, and design. Accuracy figures vary, with one owner reporting +5 to +7 seconds per day and another noting +15/-10 seconds per day. Overall, owners and reviewers rate the Seiko King Seiko KSK highly for its exceptional finishing and vintage-inspired design at its price point.
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