Side by side

Glycine Airman No. 1 GMTvsSeestern S446 GMT

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

Airman No. 1 GMT
GlycineAirman No. 1 GMT
MSRP $2,800
S446 GMT
SeesternS446 GMT
MSRP $299

At a glance

17 of 29 specs differ
Diameter
Airman No. 1 GMT36mm
S446 GMT39.5mm
Power Reserve
Airman No. 1 GMT48h
S446 GMT41hh
Water Resistance
Airman No. 1 GMT30m
S446 GMT100m
MSRP
Airman No. 1 GMT$2,800
S446 GMT$299

Full specifications

Case

7 specs
Diameter
36mm
39.5mm
Thickness
11.6mm
13mm
Lug-to-Lug
47mm
Material
Stainless Steel
316L Stainless Steel
Finish
Brushed and polished
Water Resistance
30m
100m
Caseback
Solid

Crystal & Dial

5 specs
Crystal Shape
Domed
AR Coating
Inner
Dial Color
Silver
Cream
Indices
Applied
Lume
Luminous
None

Movement

4 specs
Caliber
SW330-2
Seiko NH34A GMT
Beat Rate
28,800 vph
3 vph
Power Reserve
48h
41hh
Jewels
25
24

Pricing

1 specs
MSRP
$2,800
$299

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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.

Glycine Airman No. 1 GMT

Owners widely praise the Glycine Airman No. 1 GMT for its historical significance and attractive dial. However, some find the 36mm case size to be a bit small, and the GMT hand can be difficult to distinguish from the minute hand. The watch has a very limited 3ATM water resistance. Later versions feature sapphire crystals, differing from earlier plexi models. Overall, owners value the Glycine Airman No. 1 GMT for its historical appeal and dial design, despite minor legibility and sizing concerns.

From video reviewers

The case finishing and dial colors are praised. The value proposition is tied to a sale price, with questions about long-term competitiveness.

Seestern S446 GMT

Owners widely praise the Seestern S446 GMT for its stunning finishing and extreme value, with a sapphire crystal and adjustable clasp. The winding action is noted as buttery smooth, and the 39.5mm case size is considered very wearable. Some owners, however, flag the lume as a weak point and one owner found the bracelet clasp lacked sufficient micro-adjustment. The Seestern S446 GMT is considered an extreme value for the dollar. Overall, owners rate the Seestern S446 GMT highly for its exceptional finishing and value proposition at its price point.

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