Side by side

Seiko Astron GPS Solar 2025 Limited EditionvsHELM Vanuatu Titanium

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
Vanuatu Titanium
HELMVanuatu Titanium
MSRP $350

At a glance

13 of 29 specs differ
Diameter
Astron GPS Solar 2025 Limited Edition42mm
Vanuatu Titanium42mm
Power Reserve
Astron GPS Solar 2025 Limited Edition40h
Vanuatu Titanium40h
Water Resistance
Astron GPS Solar 2025 Limited Edition100m
Vanuatu Titanium300m
MSRP
Astron GPS Solar 2025 Limited Edition$2,600
Vanuatu Titanium$350

Full specifications

Case

5 specs
Category
GMT
Diver
Thickness
12mm
14mm
Lug-to-Lug
47.9mm
50mm
Lug Width
14mm
22mm
Water Resistance
100m
300m

Crystal & Dial

2 specs
AR Coating
Super-clear coating
Yes
Lume
LumiBrite on hands and index(es)
Super-LumiNova

Movement

5 specs
Caliber
3X62
Seiko Instruments NH35
Type
Quartz
Automatic
Power Reserve
40h
40h
Jewels
10
24
Complications
None
Date

Pricing

1 specs
MSRP
$2,600
$350

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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.

HELM Vanuatu Titanium

The HELM Vanuatu Titanium is widely praised by owners for its lightweight titanium construction, brushed gunmetal finish, simple design, legible hands and markers, and excellent lume, offering significant value at $300. Owners note the watch looks good in person and express enthusiasm for their existing Vanuatu Ti models. Some owners wish for Miyota 9x movements in place of the NH series. The unhardened titanium scratches easily, and the 42mm case may be too large for smaller wrists. A significant drawback is the long waiting list. On balance, owners rate the HELM Vanuatu Titanium highly for its lightweight titanium build and excellent lume at the price point.

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