Side by side

Seiko Astron GPS Solar 2025 Limited EditionvsZelos GT

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

Astron GPS Solar 2025 Limited Edition
SeikoAstron GPS Solar 2025 Limited Edition
MSRP $2,600
GT
ZelosGT
MSRP $499

At a glance

12 of 29 specs differ
Diameter
Astron GPS Solar 2025 Limited Edition42mm
GT42mm
Power Reserve
Astron GPS Solar 2025 Limited Edition40h
GT40h
Water Resistance
Astron GPS Solar 2025 Limited Edition100m
GT100m
MSRP
Astron GPS Solar 2025 Limited Edition$2,600
GT$499

Full specifications

Case

5 specs
Category
GMT
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
$2,600
$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 GPS Solar 2025 Limited Edition

The Seiko Astron GPS Solar 2025 Limited Edition is widely praised for its advanced GPS time and date adjustment capabilities, powered by light to eliminate battery changes. Owners and reviewers highlight its impressive accuracy and the convenience of automatic time zone updates, with some specifically commending the wearability of the 39mm size and its clean, simple design. However, reception of the GPS signal requires an unobstructed view of the sky, and manual time zone adjustments are necessary for Daylight Saving Time on some variants. One owner notes a slight imperfection in chapter ring alignment on the 39mm model. On balance, owners and reviewers rate the Seiko Astron GPS Solar 2025 Limited Edition highly for its satellite-powered timekeeping and improved wearability in the 39mm configuration.

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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