AVI-8 Spitfire Lock ChronographvsSeiko Prospex SPEEDTIMER Seiko Brand 100th Anniversary SPEEDTIMER Limited Edition
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Measurements
Catalog photos are all shot at the same flattering size. These aren't: every case below shares one millimeter scale.

Spitfire Lock Chronograph

Prospex SPEEDTIMER Seiko Brand 100th Anniversary SPEEDTIMER Limited Edition
Diameter
42mm
42mm
Lug-to-Lug
50mm
49.6mm
lowest
Thickness
12mm
lowest
12.9mm
Water Resistance
50m
100m
highest
MSRP
$260
lowest
$2,400
Movement
Quartz
Seiko 5X83
Case
5 specsCrystal & Dial
5 specsMovement
2 specsPricing
1 specsReviews
Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.
Owners widely appreciate the AVI-8 Spitfire Lock Chronograph's compelling design, drawing inspiration from Supermarine Spitfires with details like a prominent crown and rivets, and find the build quality excellent for the price. The watch features a 42mm stainless steel case with curved lugs for wearability, a bi-compax layout with subdials for elapsed time and a 24-hour scale, and black lume that glows green. Some owners note that AVI-8 watches offer something different and are decently well-made, though not of insane quality, and one reviewer found the included leather strap and bracelet to be the weakest aspects. On balance, owners and reviewers rate the AVI-8 Spitfire Lock Chronograph highly for its striking design and good value at its price point.
The Seiko Prospex SPEEDTIMER Seiko Brand 100th Anniversary SPEEDTIMER Limited Edition is praised for its retro design and good finishing within a balanced 42mm case. Reviewers note a 100m water resistance and sapphire crystal. One review flags the 45-hour power reserve as short compared to modern Swiss competitors, and the date window at 4:30 is a point of debate. Another review suggests a desire for a thinner case, quick-release strap mechanisms, and micro-adjustment on the bracelet, while also perceiving the watch as costly. On balance, reviewers appreciate the vintage-inspired design and finishing but note trade-offs in power reserve and bracelet features, with some finding the price point high.
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