Side by side

Grand Seiko SBGM221vsSpinnaker Croft Mid-Size Skeleton

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

SBGM221
Grand SeikoSBGM221
MSRP $5,400
Croft Mid-Size Skeleton
SpinnakerCroft Mid-Size Skeleton
MSRP $425

At a glance

12 of 29 specs differ
Diameter
SBGM22139.5mm
Croft Mid-Size Skeleton40mm
Power Reserve
SBGM22172h
Croft Mid-Size Skeleton40h
Water Resistance
SBGM22130m
Croft Mid-Size Skeleton100m
MSRP
SBGM221$5,400
Croft Mid-Size Skeleton$425

Full specifications

Case

7 specs
Category
GMT
Field
Diameter
39.5mm
40mm
Thickness
13.7mm
14mm
Lug-to-Lug
46.9mm
47mm
Lug Width
19mm
20mm
Material
Stainless Steel
316L Stainless Steel
Water Resistance
30m
100m

Crystal & Dial

2 specs
AR Coating
Yes
Inner
Dial Color
Black
Dollar Diver

Movement

2 specs
Caliber
9S66
SII NH38A
Power Reserve
72h
40h

Pricing

1 specs
MSRP
$5,400
$425

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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 SBGM221

Grand Seiko SBGM221 is widely praised for its exceptional dial finish, highly polished hands and indices, and elegant design. Owners consistently highlight the stunning craftsmanship, with specific mention of the up to 11 hand-polished facets on its rectangular markers. The reliable 9S66 movement is noted for its 72-hour power reserve and true GMT functionality, tested beyond Chronometer specifications. Some enthusiasts desire a bidirectional 24-hour bezel, which the Grand Seiko SBGM221 lacks, and its 13.7mm thickness and 19mm lug width are noted as potential limitations. On balance, owners rate the Grand Seiko SBGM221 highly for its exquisite finishing and elegant, comfortable design.

From video reviewers

The SBGM221 is praised for its value within the Grand Seiko lineup. The lug width is cited as a weakness.

Spinnaker Croft Mid-Size Skeleton

The Spinnaker Croft Mid-Size Skeleton is noted for its 40mm steel case, sapphire crystal, and 150m water resistance. One owner reports strong performance from the TMI NH70 movement at -3 seconds per day, with very nice lume. On balance, owners find the Spinnaker Croft Mid-Size Skeleton to be a pretty nice option, particularly for its movement performance and lume.

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