AVI-8 Spitfire Lock ChronographvsHemel HFC Mechanical Chronograph

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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.

AVI-8 Spitfire Lock Chronograph at true scale

Spitfire Lock Chronograph

Hemel HFC Mechanical Chronograph at true scale

HFC Mechanical Chronograph

Diameter

42mm

40mm

Lug-to-Lug

50mm

47mm

lowest

Thickness

12mm

lowest

13.4mm

Water Resistance

50m

100m

highest

MSRP

$260

lowest

$550

Movement

Quartz

Seagull ST19 (family)

Case

5 specs
Diameter
42mm
40mm
Thickness
12mm
13.4mm
Lug-to-Lug
50mm
47mm
Lug Width
22mm
20mm
Water Resistance
50m
100m

Crystal & Dial

2 specs
Crystal
Mineral
Domed Sapphire
Dial Color
MIDNIGHT OAK
Airfoil (1970s British Pilot)

Movement

2 specs
Caliber
n/a
Seagull ST19 (family)
Type
Quartz
Manual

Pricing

1 specs
MSRP
$260
$550
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Reviews

Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.

AVI-8 Spitfire Lock Chronograph

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.

Hemel HFC Mechanical Chronograph

The Hemel HFC Mechanical Chronograph is praised for its 40mm case size, curved sapphire crystal, and lumed ceramic bezel with 12-hour markers. Owners and reviewers highlight its 100m water resistance and the horological significance of its Seagull ST19 manual-winding movement, particularly at its price point, with some appreciating the exhibition caseback. One owner expressed concern regarding the ST19 movement's reliability. Overall, owners and reviewers rate the Hemel HFC Mechanical Chronograph highly for its vintage pilot's watch aesthetic combined with modern utility and value.