Side by side

Glycine Combat Sub Chronograph SportvsSeiko Astron GPS Solar 2025 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 Combat Sub Chronograph Sport

Owners widely praise the Glycine Combat Sub Chronograph Sport for its exceptional value as a Swiss automatic diver, highlighting its refined finishing, thin profile at around 10.4-10.8mm, and accurate movements. The watch is noted for its comfortable wearability, with downward-curving lugs on the 42mm case making it wear smaller than its dimensions suggest, and its unique aesthetic is appreciated for avoiding homage designs. Some owners dislike the "COMBAT" text on the dial and find the original strap or bracelet to be lacking, though it is considered a versatile "strap monster." The lume is described as sub-par by one owner, and another noted an inconsistent power reserve. There is a design critique regarding the date window placement, with one owner calling it a significant flaw while another finds it acceptable due to its alignment with the crown.

Seiko Astron GPS Solar 2025 Limited Edition

The Seiko Astron GPS Solar 2025 Limited Edition is lauded for its advanced satellite timekeeping and perpetual calendar functionality, offering global time and location updates via GPS signals. Owners appreciate its well-built titanium or steel case, often featuring a ceramic bezel, and the unique asymmetrical design inspired by the 1983 Seiko 7A28 6000. However, its substantial 47mm size and 16.5mm thickness are frequently noted as drawbacks, with some finding it wears large and is difficult to fit under shirt sleeves. The perpetual calendar is limited to displaying only the date, and GPS signal reception requires a clear view of the sky, posing challenges indoors. The watch is priced around $2,900 and is limited to 3,000 pieces. Overall, owners and reviewers value the Seiko Astron GPS Solar 2025 Limited Edition for its cutting-edge technology and distinctive design, despite its considerable dimensions.

At a glance

19 of 29 specs differ
Diameter
Combat Sub Chronograph Sport43mm
Astron GPS Solar 2025 Limited Edition43.4mm
Power Reserve
Combat Sub Chronograph Sport
Astron GPS Solar 2025 Limited Edition
Water Resistance
Combat Sub Chronograph Sport200m
Astron GPS Solar 2025 Limited Edition100m
MSRP
Combat Sub Chronograph Sport$1,295
Astron GPS Solar 2025 Limited Edition$2,900

Full specifications

Case

8 specs
Diameter
43mm
43.4mm
Thickness
12mm
13.4mm
Lug-to-Lug
49.5mm
Lug Width
22mm
14mm
Material
Stainless Steel
Titanium
Finish
Water Resistance
200m
100m
Caseback

Crystal & Dial

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

Movement

5 specs
Caliber
5040.D
5X83
Beat Rate
0 vph
Power Reserve
0h
Jewels
13
14
Complications
Date, Chronograph
None

Pricing

1 specs
MSRP
$1,295
$2,900
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