Side by side

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.

Spitfire Lock Chronograph
AVI-8Spitfire Lock Chronograph
MSRP $260
Astron GPS Solar 2025 Limited Edition
SeikoAstron GPS Solar 2025 Limited Edition
MSRP $2,600

At a glance

12 of 29 specs differ
Diameter
Spitfire Lock Chronograph42mm
Astron GPS Solar 2025 Limited Edition42mm
Power Reserve
Spitfire Lock Chronograph40h
Astron GPS Solar 2025 Limited Edition40h
Water Resistance
Spitfire Lock Chronograph50m
Astron GPS Solar 2025 Limited Edition100m
MSRP
Spitfire Lock Chronograph$260
Astron GPS Solar 2025 Limited Edition$2,600

Full specifications

Case

5 specs
Category
Chronograph
GMT
Lug-to-Lug
50mm
47.9mm
Lug Width
22mm
14mm
Material
316L Stainless Steel
Titanium
Water Resistance
50m
100m

Crystal & Dial

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

Movement

2 specs
Caliber
3X62
Jewels
25
10

Pricing

1 specs
MSRP
$260
$2,600

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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 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.

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