Side by side

Grand Seiko SBGR321vsSpinnaker Hull Chronograph

The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.

SBGR321
Grand SeikoSBGR321
MSRP $5,200
Hull Chronograph
SpinnakerHull Chronograph
MSRP $149

At a glance

12 of 29 specs differ
Diameter
SBGR32140mm
Hull Chronograph42mm
Power Reserve
SBGR32172h
Hull Chronograph40h
Water Resistance
SBGR321100m
Hull Chronograph100m
MSRP
SBGR321$5,200
Hull Chronograph$149

Full specifications

Case

6 specs
Category
Dress
Chronograph
Diameter
40mm
42mm
Thickness
13mm
15mm
Lug-to-Lug
46.6mm
48mm
Lug Width
20mm
22mm
Material
Stainless Steel
316L Stainless Steel

Crystal & Dial

2 specs
AR Coating
Yes
Inner
Dial Color
Black
Maroon

Movement

3 specs
Caliber
9S65
Seiko VK64
Type
Automatic
Quartz
Power Reserve
72h
40h

Pricing

1 specs
MSRP
$5,200
$149

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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.

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.

Spinnaker Hull Chronograph

Owners widely praise the Spinnaker Hull Chronograph for its stunning textured dial and impressive value, with a meca-quartz movement offering quartz accuracy and mechanical chronograph function. The build quality, including a milled clasp, solid links, and sapphire crystal with AR coating, is noted as exceeding expectations for the price. One owner finds the 42mm case wearable due to short lugs, while another describes the dial as gorgeous and the watch as running perfectly. However, one owner reports a $198 repair quote for a cracked crystal, described as "fused to the case," though other forum members dispute this cost. The lume is considered mediocre, and the 24-hour subdial is seen by one owner as functionally futile. On balance, owners rate the Spinnaker Hull Chronograph highly for its exceptional dial and build quality at its price point.

From video reviewers

The Spinnaker Burnt Maroon features a reliable and accurate Seiko VK73 movement. A suitable lug-to-lug fit makes it suitable for smaller wrists. The watch's 15mm thickness may be a drawback for some, particularly those with smaller wrists or those who prefer a more compact watch.

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