Side by side

Glycine Airman No. 1 GMTvsSeiko 5 Sports Field series

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
5 Sports Field series
Seiko5 Sports Field series
MSRP $450

At a glance

17 of 29 specs differ
Diameter
Airman No. 1 GMT36mm
5 Sports Field series39.4mm
Power Reserve
Airman No. 1 GMT48h
5 Sports Field series41h
Water Resistance
Airman No. 1 GMT30m
5 Sports Field series100m
MSRP
Airman No. 1 GMT$2,800
5 Sports Field series$450

Full specifications

Case

6 specs
Diameter
36mm
39.4mm
Thickness
11.6mm
13.6mm
Lug-to-Lug
47.9mm
Finish
Brushed and polished
Water Resistance
30m
100m
Caseback
Solid

Crystal & Dial

6 specs
Crystal
Sapphire
Hardlex
Crystal Shape
Curved
AR Coating
Inner
Dial Color
Silver
Black
Indices
Applied
Lume
Luminous
LumiBrite on hands and index(es)

Movement

4 specs
Caliber
SW330-2
4R34
Power Reserve
48h
41h
Jewels
25
24
Complications
GMT, Date
None

Pricing

1 specs
MSRP
$2,800
$450

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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.

Seiko 5 Sports Field series

The Seiko 5 Sports Field series offers an accessible explorer-style watch with a 41mm stainless steel case, 100m water resistance, and a Hardlex crystal. The Field GMT model features a caller GMT complication powered by the 4R34 movement, while the standard Field models use the 4R36 with a 41-hour power reserve. Both models include Arabic numerals coated in LumiBrite and a lumed pearl on the bezel. On balance, the Seiko 5 Sports Field GMT is a well-regarded entry-level explorer watch for its price point, despite its office-style GMT function.

From video reviewers

The prominent five-sided GMT hand enhances legibility and adds a sophisticated aesthetic to the watch. The Seiko 5 Sports Field series offers similar functionality to the Explorer 2 at a lower price, making it a valuable option. Reviewers disagree on whether it's a missed opportunity for Seiko to release this model first, with one reviewer implying it would have been a more logical addition to their lineup.

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