Side by side

AVI-8 Spitfire Lock ChronographvsGruppo Gamma Field III GMT

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
Field III GMT
Gruppo GammaField III GMT
MSRP $459

At a glance

15 of 29 specs differ
Diameter
Spitfire Lock Chronograph42mm
Field III GMT40mm
Power Reserve
Spitfire Lock Chronograph40h
Field III GMT41h
Water Resistance
Spitfire Lock Chronograph50m
Field III GMT200m
MSRP
Spitfire Lock Chronograph$260
Field III GMT$459

Full specifications

Case

6 specs
Category
Chronograph
GMT
Diameter
42mm
40mm
Thickness
12mm
14mm
Lug-to-Lug
50mm
48.5mm
Material
316L Stainless Steel
Stainless Steel
Water Resistance
50m
200m

Crystal & Dial

4 specs
Crystal
Mineral
Sapphire
AR Coating
Inner
Yes
Dial Color
MIDNIGHT OAK
Black
Lume
None
Super-LumiNova

Movement

4 specs
Caliber
Seiko Instruments NH38A
Type
Quartz
Automatic
Power Reserve
40h
41h
Complications
None
GMT

Pricing

1 specs
MSRP
$260
$459

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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.

Gruppo Gamma Field III GMT

Owners praise the Gruppo Gamma Field III GMT for its look and value, with specific mentions of its sandwich dial and comfortable OEM straps. One owner notes incredible quality for the price across their Gruppo Gamma watches. The watch features a 40mm brushed stainless steel case, box sapphire crystal, and a Seiko NH34A movement with a 41-hour power reserve and stated accuracy of -20~+40 s/day. Some find the lack of a date window a drawback for a GMT, and question its differentiation from other NH34-powered watches. On balance, owners and reviewers find the Gruppo Gamma Field III GMT to be a good value with quality construction for its price point.

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