Side by side

Seiko AstronvsZelos GT

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

Astron
SeikoAstron
MSRP $2,400
GT
ZelosGT
MSRP $499

At a glance

12 of 29 specs differ
Diameter
Astron42mm
GT42mm
Power Reserve
Astron40h
GT40h
Water Resistance
Astron100m
GT100m
MSRP
Astron$2,400
GT$499

Full specifications

Case

5 specs
Category
Dress
Chronograph
Thickness
12mm
10.8mm
Lug-to-Lug
47.9mm
42mm
Lug Width
14mm
22mm
Material
Titanium
316L Stainless Steel

Crystal & Dial

3 specs
AR Coating
Super-clear coating
Inner
Dial Color
Black
SS - Azzurro
Lume
LumiBrite on hands and index(es)
None

Movement

3 specs
Caliber
3X62
Miyota 9133
Type
Quartz
Automatic
Jewels
10
25

Pricing

1 specs
MSRP
$2,400
$499

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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 Astron

The Seiko Astron is widely praised for its advanced time-telling technology, including GPS and radio wave synchronization, and its self-sufficient solar-powered quartz movement. Owners appreciate the detailed and high-contrast dials, comfortable and lightweight titanium builds, and well-finished cases and bracelets. Some users report excellent accuracy, with one noting +/- 15 seconds per month, while another finds the autonomous movement's accuracy of 1/2 second per day acceptable due to easy correction via GPS sync. However, the Seiko Astron's price point is frequently cited as a drawback, with some finding it high for a quartz watch, particularly when compared to luxury or mechanical alternatives. Specific criticisms include manual DST implementation, the need for outdoor sync, sparse lume, and a minute hand that sits slightly off on one model, with accuracy of +13 sec/month being disappointing for its cost on another.

Zelos GT

The Zelos GT is lauded for its value and bold design, with owners highlighting the cool power reserve meter and superb 3-point micro-adjust bracelet. Some owners find the case and lugs could hug the wrist better, and the bracelet is noted as being quite long, requiring significant link removal for a 7.1-inch wrist. The dark green dial, while inspired by Lamborghini, is described as appearing mostly black. Overall, owners rate the Zelos GT highly for its value and the quality of its bracelet at the price point.

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