Side by side

Seiko Astron GPS Solar 2025 Limited EditionvsTornek-Rayville Blakjak 12-hr GMT

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
Blakjak 12-hr GMT
Tornek-RayvilleBlakjak 12-hr GMT
MSRP $895

At a glance

14 of 29 specs differ
Diameter
Astron GPS Solar 2025 Limited Edition42mm
Blakjak 12-hr GMT42.5mm
Power Reserve
Astron GPS Solar 2025 Limited Edition40h
Blakjak 12-hr GMT42h
Water Resistance
Astron GPS Solar 2025 Limited Edition100m
Blakjak 12-hr GMT200m
MSRP
Astron GPS Solar 2025 Limited Edition$2,600
Blakjak 12-hr GMT$895

Full specifications

Case

7 specs
Category
GMT
Diver
Diameter
42mm
42.5mm
Thickness
12mm
13.2mm
Lug-to-Lug
47.9mm
49mm
Lug Width
14mm
22mm
Material
Titanium
Stainless Steel
Water Resistance
100m
200m

Crystal & Dial

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

Movement

4 specs
Caliber
3X62
SII NH36
Type
Quartz
Automatic
Power Reserve
40h
42h
Jewels
10
25

Pricing

1 specs
MSRP
$2,600
$895

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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.

Tornek-Rayville Blakjak 12-hr GMT

The Tornek-Rayville Blakjak 12-hr GMT is a 42.5mm stainless steel watch featuring a DLC-coated bezel, sapphire crystal, and a matte black dial with 12- and 24-hour scales. It is powered by a Seiko SII NH36 automatic movement, offering a 41-hour power reserve, and boasts 200 meters of water resistance. The dial includes a day/date complication and Super-LumiNova BGW9 lume. Overall, owners and reviewers highlight its robust build and functional military-inspired design as key strengths.

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