Side by side

Grand Seiko SBGM221vsZelos Skyraider 40 Skeleton

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

SBGM221
Grand SeikoSBGM221
MSRP $5,400
Skyraider 40 Skeleton
ZelosSkyraider 40 Skeleton
MSRP $1,999

At a glance

13 of 29 specs differ
Diameter
SBGM22139.5mm
Skyraider 40 Skeleton40mm
Power Reserve
SBGM22172h
Skyraider 40 Skeleton40h
Water Resistance
SBGM22130m
Skyraider 40 Skeleton50m
MSRP
SBGM221$5,400
Skyraider 40 Skeleton$1,999

Full specifications

Case

7 specs
Category
GMT
Skeleton
Diameter
39.5mm
40mm
Thickness
13.7mm
8.2mm
Lug-to-Lug
46.9mm
40mm
Lug Width
19mm
20mm
Material
Stainless Steel
Titanium
Water Resistance
30m
50m

Crystal & Dial

2 specs
AR Coating
Yes
Inner
Dial Color
Black
Ti Damascus LE

Movement

3 specs
Caliber
9S66
Swiss Skeletonised Marvin 700
Type
Automatic
Manual
Power Reserve
72h
40h

Pricing

1 specs
MSRP
$5,400
$1,999

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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.

Zelos Skyraider 40 Skeleton

The Zelos Skyraider 40 Skeleton is noted for its skeletonized dial and the use of BGW9 and C3 Super-LumiNova for legibility. It is powered by a manual-wind ETA 6498 movement, offering a 44-hour power reserve. On balance, the Zelos Skyraider 40 Skeleton is seen as a cool-looking option, though availability is a factor.

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