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Seiko Prospex SPEEDTIMERvsSeiko 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.

Seiko Prospex SPEEDTIMER

Owners widely praise the Seiko Prospex SPEEDTIMER's design, with specific mentions of its beautiful ice blue sundial and compact 39mm case size, which some note wears smaller than its specifications due to a short lug-to-lug distance. Reviewers highlight its racing-inspired aesthetic and versatility, with one owner finding the 39mm solar model a sturdy and reliable everyday watch with 100m water resistance. However, some owners question the value proposition, citing the $700 price for a solar quartz model and a thickness of 13mm, while others expressed a preference for automatic movements. On balance, owners and reviewers appreciate the Seiko Prospex SPEEDTIMER's attractive vintage-inspired design and compact wearability, though some debate its value and thickness for a solar quartz chronograph.

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

9 of 29 specs differ
Diameter
Prospex SPEEDTIMER41.4mm
Astron GPS Solar 2025 Limited Edition43.4mm
Power Reserve
Prospex SPEEDTIMER
Astron GPS Solar 2025 Limited Edition
Water Resistance
Prospex SPEEDTIMER100m
Astron GPS Solar 2025 Limited Edition100m
MSRP
Prospex SPEEDTIMER$750
Astron GPS Solar 2025 Limited Edition$2,900

Full specifications

Case

5 specs
Diameter
41.4mm
43.4mm
Thickness
13mm
13.4mm
Lug-to-Lug
45.9mm
49.5mm
Lug Width
21mm
14mm
Material
Stainless Steel
Titanium

Crystal & Dial

1 specs
AR Coating
Anti-reflective coating on inner surface
Super-clear coating

Movement

2 specs
Caliber
V192
5X83
Jewels
0
14

Pricing

1 specs
MSRP
$750
$2,900
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