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AVI-8 Spitfire Lock ChronographvsSeiko 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.

AVI-8 Spitfire Lock Chronograph

Owners widely report AVI-8 watches offer a compelling design and are decently well made for the price. The AVI-8 Spitfire Lock Chronograph features a 42mm stainless steel case with curved lugs, a bi-compax meca-quartz movement, and a mineral crystal, with design elements inspired by Supermarine Spitfires. One owner notes that AVI-8 watches are "something different" and "decently well made," though not of "insane quality." On balance, owners and reviewers appreciate the AVI-8 Spitfire Lock Chronograph for its unique design and value proposition.

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

14 of 29 specs differ
Diameter
Spitfire Lock Chronograph42mm
Astron GPS Solar 2025 Limited Edition43.4mm
Power Reserve
Spitfire Lock Chronograph
Astron GPS Solar 2025 Limited Edition
Water Resistance
Spitfire Lock Chronograph50m
Astron GPS Solar 2025 Limited Edition100m
MSRP
Spitfire Lock Chronograph$260
Astron GPS Solar 2025 Limited Edition$2,900

Full specifications

Case

6 specs
Diameter
42mm
43.4mm
Thickness
12mm
13.4mm
Lug-to-Lug
50mm
49.5mm
Lug Width
22mm
14mm
Material
316L Stainless Steel
Titanium
Water Resistance
50m
100m

Crystal & Dial

5 specs
Crystal
Mineral
Sapphire
Crystal Shape
Curved
AR Coating
Super-clear coating
Dial Color
MIDNIGHT OAK
Lume
None
LumiBrite on hands and index(es)

Movement

2 specs
Caliber
Seiko 5X83
Jewels
0
14

Pricing

1 specs
MSRP
$260
$2,900
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