Side by side

Glycine Airman No. 1 PuristvsGrand Seiko SBGM221

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

Airman No. 1 Purist
GlycineAirman No. 1 Purist
MSRP $2,800
SBGM221
Grand SeikoSBGM221
MSRP $5,400

At a glance

15 of 29 specs differ
Diameter
Airman No. 1 Purist36mm
SBGM22139.5mm
Power Reserve
Airman No. 1 Purist48h
SBGM22172h
Water Resistance
Airman No. 1 Purist30m
SBGM22130m
MSRP
Airman No. 1 Purist$2,800
SBGM221$5,400

Full specifications

Case

6 specs
Diameter
36mm
39.5mm
Thickness
11.6mm
13.7mm
Lug-to-Lug
46.9mm
Lug Width
20mm
19mm
Finish
Brushed and polished
Caseback
Solid

Crystal & Dial

5 specs
Crystal Shape
Flat
AR Coating
Yes
Dial Color
Silver
Black
Indices
Applied
Lume
Luminous
None

Movement

3 specs
Caliber
SW330-2
9S66
Power Reserve
48h
72h
Complications
Date
None

Pricing

1 specs
MSRP
$2,800
$5,400

Follow this matchup

Get a note when Glycine Airman No. 1 Purist vs Grand Seiko SBGM221 gets more votes, a community discussion, or a price drop. No account needed.

What people say

Owners + reviewers, side by side

Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.

Glycine Airman No. 1 Purist

The Glycine Airman No. 1 Purist is praised as a faithful re-creation of a historical 24-hour watch, with one owner purchasing it for $620 and viewing it as a long-term keeper due to its heritage reissue status and vintage aesthetics. The 36mm size is noted as a conversation starter. However, the acrylic crystal is prone to scratching, with one example showing a small scratch over the date window. Some community members suggest pre-Invicta models may hold value better. Overall, owners appreciate the Glycine Airman No. 1 Purist for its authentic vintage appeal and unique dial, though the acrylic crystal requires careful handling.

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.

Keep exploring

More watches worth a look

Matched to the watches above on size, movement, style and price — microbrands first. Open any one to dig in.

Adjacent matchups

People also compared

Comparisons nearby in the catalog — alternatives to the watches above paired against the matchup.