Side by side

Glycine Airman GMT Dual TimevsSeiko Astron GPS Solar 2025 Limited Edition

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

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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.

Glycine Airman GMT Dual Time

The Glycine Airman GMT Dual Time is praised for its comfortable size, attractive aesthetics, blue AR-coated sapphire crystal, and value as a "grab 'n' go" quartz piece. Owners appreciate its classic pilot design and wearability, with some finding it fits well under a shirt cuff and looks more expensive on a mesh bracelet. However, some find the dual GMT hands redundant and less intuitive than a purist 24-hour dial, with the GMT hand's similarity to the minute hand causing frustration for some. Legibility is a concern for some owners, who note the dark Arabic numerals on the black dial can be hard to see in less than ideal light, though the luminous hands are considered amazing. On balance, owners and reviewers rate the Glycine Airman GMT Dual Time highly for its classic design and comfortable wearability, despite some legibility and GMT hand usability concerns.

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.

At a glance

18 of 29 specs differ
Diameter
Airman GMT Dual Time42mm
Astron GPS Solar 2025 Limited Edition42mm
Power Reserve
Airman GMT Dual Time
Astron GPS Solar 2025 Limited Edition
Water Resistance
Airman GMT Dual Time200m
Astron GPS Solar 2025 Limited Edition100m
MSRP
Airman GMT Dual Time$1,095
Astron GPS Solar 2025 Limited Edition$2,600

Full specifications

Case

7 specs
Thickness
13mm
12mm
Lug-to-Lug
47.9mm
Lug Width
22mm
14mm
Material
Stainless Steel
Titanium
Finish
Water Resistance
200m
100m
Caseback

Crystal & Dial

5 specs
Crystal Shape
AR Coating
Super-clear coating
Dial Color
Blue
Indices
Lume
Luminous
LumiBrite on hands and index(es)

Movement

5 specs
Caliber
Seiko 3X62
Beat Rate
0 vph
Power Reserve
0h
Jewels
5
10
Complications
GMT, Date, Dual Time
None

Pricing

1 specs
MSRP
$1,095
$2,600
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