Spinnaker FleussvsSeiko 5KX

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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.

Spinnaker Fleuss at true scale

Fleuss

Seiko 5KX at true scale

5KX

Diameter

43mm

42.5mm

Lug-to-Lug

51mm

46mm

lowest

Thickness

13mm

lowest

13.4mm

Water Resistance

150m

highest

100m

Power Reserve

n/a

41h

MSRP

$209

lowest

$350

Movement

Seiko NH35

Seiko 4R36

Case

5 specs
Diameter
43mm
42.5mm
Thickness
13mm
13.4mm
Lug-to-Lug
51mm
46mm
Material
316L Stainless Steel
Stainless Steel
Water Resistance
150m
100m

Crystal & Dial

3 specs
Crystal
Sapphire
Hardlex
Dial Color
Lumber Black
Blue
Lume
None
LumiBrite on hands and index(es)

Movement

3 specs
Caliber
Seiko NH35
Seiko 4R36
Power Reserve
0h
41h
Jewels
0
24

Pricing

1 specs
MSRP
$209
$350
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Reviews

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

Spinnaker Fleuss

The Spinnaker Fleuss is praised for its retro design, textured dial, and good value, especially with discounts, offering a Blancpain Fifty-Five homage. Owners report superb build quality and finish for the price, with one noting it looks better in person than in website photos. The dial is well lumed, and the watch keeps good time with a decent power reserve. However, some find the 43mm case on the larger side, and one owner found the included leather strap too thick. Concerns have been raised about the acrylic bezel's durability and the watch's origin in Hong Kong. Overall, owners and reviewers rate the Spinnaker Fleuss highly for its attractive design and strong build quality at its price point.

Seiko 5KX

Owners widely praise the Seiko 5KX for its strong lume and value, with many reporting accuracy within +/-5 to 10 seconds per day, though some experience +/-1 second. The 42.5mm case is noted to wear smaller, and the watch offers a comfortable feel for many. Some owners are split on the bracelet quality, with opinions ranging from "cheaper side" with hollow links to "flimsy-feeling" jubilee. A few quality control issues have been reported, including a failed bezel clickspring and misaligned components. The Seiko 5KX is seen by some as a worthy successor to the original SKX, offering an upgraded movement with hacking and hand-winding capabilities, though others lament the loss of ISO certification and a screw-down crown. Overall, owners rate the Seiko 5KX highly for its excellent lume and value proposition, making it a popular choice for everyday wear.

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