Seiko Seiko 5 Sports SKX seriesvsZelos Spearfish GMT

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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 Seiko 5 Sports SKX series at true scale

Seiko 5 Sports SKX series

Zelos Spearfish GMT at true scale

Spearfish GMT

Diameter

42.5mm

40mm

Lug-to-Lug

46mm

n/a

Thickness

13.6mm

13mm

lowest

Water Resistance

100m

200m

highest

Power Reserve

41h

n/a

MSRP

$495

lowest

$999

Movement

Seiko 4R34

Sellita SW330-2

Case

6 specs
Diameter
42.5mm
40mm
Thickness
13.6mm
13mm
Lug-to-Lug
46mm
n/a
Lug Width
22mm
20mm
Material
Stainless Steel
316L Stainless Steel
Water Resistance
100m
200m

Crystal & Dial

3 specs
Crystal
Hardlex
Sapphire
Dial Color
n/a
Frost
Lume
LumiBrite on hands and index(es)
None

Movement

3 specs
Caliber
Seiko 4R34
Sellita SW330-2
Power Reserve
41h
0h
Jewels
24
0

Pricing

1 specs
MSRP
$495
$999
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Reviews

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

Seiko 5 Sports SKX series

Owners widely praise the Seiko 5 Sports SKX series for its iconic, tough, and rugged dive watch design, timeless styling, and tool-like nature, with many finding its build quality and finishing superior to alternatives. The comfortable jubilee bracelet is frequently cited as a positive wearability feature. Accuracy with the 4R34 movement is a "luck of the draw," with specs allowing +/-40 seconds per day, though many owners report +/-5 to 10 seconds. Some owners experienced issues like scratched crystals, failed springbars, or misaligned bezels and hands. The Seiko 5 Sports SKX series is seen as a decent watch, readily available under £200, but not a serious tool watch like its predecessor due to lacking a screw-down crown, bezel pip, and ISO rating. Overall, owners rate the Seiko 5 Sports SKX series highly for its iconic design and value, despite some lacking modern features.

Zelos Spearfish GMT

Owners widely praise the Zelos Spearfish GMT for its exceptional value and build quality, with one owner noting it garners more compliments than higher-end watches. Reviewers highlight its excellent machining, flawless finishing, and a superb bracelet featuring tool-less micro-adjustment that surpasses its price point. The watch is powered by a Sellita SW330-2 automatic movement. Some owners report accuracy around +2.6 seconds per day, while others note a minor compromise in end link fit. Overall, owners and reviewers rate the Zelos Spearfish GMT highly for its impressive finishing and bracelet at its $645 price.

From video reviewers

The bezel action is a strong point. The bracelet quality is a weakness. Reviewers disagreed on the dial material, with some mentioning aventurine and others meteorite.