Side by side

Seiko 5KXvsZelos Spearfish GMT

The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.

5KX
Seiko5KX
MSRP $350
Spearfish GMT
ZelosSpearfish GMT
MSRP $999

At a glance

14 of 29 specs differ
Diameter
5KX42.5mm
Spearfish GMT40mm
Power Reserve
5KX41h
Spearfish GMT40h
Water Resistance
5KX100m
Spearfish GMT200m
MSRP
5KX$350
Spearfish GMT$999

Full specifications

Case

7 specs
Category
Diver
GMT
Diameter
42.5mm
40mm
Thickness
13.4mm
13mm
Lug-to-Lug
46mm
40mm
Lug Width
22mm
20mm
Material
Stainless Steel
316L Stainless Steel
Water Resistance
100m
200m

Crystal & Dial

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

Movement

3 specs
Caliber
4R36
Sellita SW330-2
Power Reserve
41h
40h
Jewels
24
25

Pricing

1 specs
MSRP
$350
$999

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What people say

Owners + reviewers, side by side

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

Seiko 5KX

Owners widely praise the Seiko 5 Sports SKX series for its strong lume and comfortable wearability, with many noting its compact feel due to a short lug-to-lug length. The NH36 movement's accuracy varies, with typical performance between +/-5 to 10 seconds per day, though some report better. A lack of screw-down crown and ISO certification are noted drawbacks for its water resistance. Some owners find the bracelet to be of cheaper construction with hollow links, and a few have reported quality control issues. The consensus is that the Seiko 5 Sports SKX series offers good value for its price, appealing to those who appreciate its tool-like nature and iconic lineage.

Zelos Spearfish GMT

The Zelos Spearfish GMT is widely praised for its exceptional value, with reviewers highlighting its superb finishing, flawless machining, and a tool-less micro-adjustment clasp that exceeds its price point. It features a La Joux-Perret G100 movement with a 68-hour power reserve, achieving an average accuracy of +2.6 seconds per day, or a Miyota 9075 movement offering flier-style GMT functionality. The 40mm case and bidirectional 48-click ceramic bezel are well-executed, though one reviewer noted a minor compromise in the end link fit. Overall, owners and reviewers rate the Zelos Spearfish GMT highly for its impressive finishing and value proposition.

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