Side by side

AVI-8 Spitfire Lock ChronographvsGrand Seiko SBGR321

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
SBGR321
Grand SeikoSBGR321
MSRP $5,200

At a glance

14 of 29 specs differ
Diameter
Spitfire Lock Chronograph42mm
SBGR32140mm
Power Reserve
Spitfire Lock Chronograph40h
SBGR32172h
Water Resistance
Spitfire Lock Chronograph50m
SBGR321100m
MSRP
Spitfire Lock Chronograph$260
SBGR321$5,200

Full specifications

Case

7 specs
Category
Chronograph
Dress
Diameter
42mm
40mm
Thickness
13mm
Lug-to-Lug
46.6mm
Lug Width
22mm
20mm
Material
316L Stainless Steel
Stainless Steel
Water Resistance
50m
100m

Crystal & Dial

3 specs
Crystal
Mineral
Sapphire
AR Coating
Inner
Yes
Dial Color
MIDNIGHT OAK
Black

Movement

3 specs
Caliber
9S65
Type
Quartz
Automatic
Power Reserve
40h
72h

Pricing

1 specs
MSRP
$260
$5,200

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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.

Grand Seiko SBGR321

Grand Seiko SBGR321 owners and reviewers widely praise its attractive design, compelling dimensions, and robust movement. The watch features sharp case lines with contrasting brushing and polishing, a 40mm steel case that provides presence without bulk, and 100m water resistance. Its sunburst blue dial, inspired by the dawn sky over Mount Iwate, showcases Grand Seiko's signature finishing on applied markers and hands, with a red-tipped seconds hand. The 9S65 automatic movement is noted for its precision, running within specifications, with one source reporting a +5 to -3 seconds a day rate and a 3-day power reserve. A blue rotor with a crimson rim, also inspired by Mount Iwate, is visible through the display caseback. On balance, owners and reviewers rate the Grand Seiko SBGR321 highly for its exceptional finishing and compelling blue dial design at its price point.

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