Side by side

Glycine Airman WorldtimervsSeiko Astron GPS Solar 2024 Limited Edition

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

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 Worldtimer

The Glycine Airman Worldtimer is widely appreciated for its classic pilot watch design and comfortable wearability, with owners specifically praising the 40mm GL1048's size and the 39mm Airman 18's legibility and build quality. The Airman 18's dial lume pips are noted as weaker than its hands, and some owners find the GMT hand on certain models difficult to read due to its thinness and lack of lume. Accuracy is generally acceptable, with one owner reporting no flaws and another noting a Sellita-based movement kept acceptable time. On balance, owners and reviewers rate the Glycine Airman Worldtimer highly for its faithful reproduction of a classic design and excellent value.

Seiko Astron GPS Solar 2024 Limited Edition

The Seiko Astron GPS Solar 2024 Limited Edition is widely praised for its light and thin wearability, with owners highlighting its comfortable 39mm size and titanium construction. Reviewers and owners alike commend its excellent lume application, clear and legible dial, and subtle gold accents. The watch offers automatic GPS time adjustment for global time and location updates, a perpetual calendar, and a six-month power reserve, eliminating battery changes. Some owners, however, find its dial too shiny for maximum versatility and note that its size wears larger than its dimensions suggest, making it less of a daily driver for some. A minor point of contention for some is the chapter ring alignment, which was noted as slightly imperfect. Overall, owners and reviewers rate the Seiko Astron GPS Solar 2024 Limited Edition highly for its blend of high-tech functionality, comfortable wearability, and attractive design.

At a glance

18 of 29 specs differ
Diameter
Airman Worldtimer42mm
Astron GPS Solar 2024 Limited Edition41.2mm
Power Reserve
Airman Worldtimer
Astron GPS Solar 2024 Limited Edition
Water Resistance
Airman Worldtimer100m
Astron GPS Solar 2024 Limited Edition100m
MSRP
Airman Worldtimer$1,395
Astron GPS Solar 2024 Limited Edition$2,300

Full specifications

Case

7 specs
Diameter
42mm
41.2mm
Thickness
14mm
12mm
Lug-to-Lug
48.5mm
Lug Width
22mm
14mm
Material
Stainless Steel
Titanium
Finish
Caseback

Crystal & Dial

5 specs
Crystal Shape
AR Coating
Super-clear coating
Dial Color
Black
Indices
Lume
None
LumiBrite on hands and index(es)

Movement

5 specs
Caliber
Ronda 515
3X62
Beat Rate
0 vph
Power Reserve
0h
Jewels
1
10
Complications
Date, World Time
None

Pricing

1 specs
MSRP
$1,395
$2,300
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