Seiko 5KXvsZelos Thresher 44

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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.

Seiko 5KX at true scale

5KX

Zelos Thresher 44 at true scale

Thresher 44

Diameter

42.5mm

44mm

Lug-to-Lug

46mm

n/a

Thickness

13.4mm

12.8mm

lowest

Water Resistance

100m

500m

highest

Power Reserve

41h

n/a

MSRP

$350

lowest

$549

Movement

Seiko 4R36

Miyota 9015

Case

5 specs
Diameter
42.5mm
44mm
Thickness
13.4mm
12.8mm
Lug-to-Lug
46mm
n/a
Material
Stainless Steel
316L Stainless Steel
Water Resistance
100m
500m

Crystal & Dial

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

Movement

3 specs
Caliber
Seiko 4R36
Miyota 9015
Power Reserve
41h
0h
Jewels
24
0

Pricing

1 specs
MSRP
$350
$549
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Reviews

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

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.

Zelos Thresher 44

Owners widely praise Zelos for beautiful, unique dials and excellent customer service. One owner found the finishing on their hammered gray Zelos Thresher 44mm not as well done as expected, while another noted its finish proved remarkably scratch-resistant. Some find the designs overly busy and occasionally shouty. One owner found the bezel action rough initially, but it smoothed out after extensive use. The watch overpowered one user's wrist despite its 44mm case. Overall, owners rate the Zelos Thresher 44 highly for its unique dials and value, despite some reservations about design busyness and finishing consistency.