Side by side

Glycine Airman GMTvsSeestern S456 GMT

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

Airman GMT
GlycineAirman GMT
MSRP $2,700
S456 GMT
SeesternS456 GMT
MSRP $299

At a glance

19 of 29 specs differ
Diameter
Airman GMT42mm
S456 GMT41mm
Power Reserve
Airman GMT48h
S456 GMT41hh
Water Resistance
Airman GMT100m
S456 GMT200m
MSRP
Airman GMT$2,700
S456 GMT$299

Full specifications

Case

8 specs
Diameter
42mm
41mm
Thickness
12mm
13mm
Lug-to-Lug
49mm
Lug Width
22mm
20mm
Material
Stainless Steel
316L Stainless Steel
Finish
Brushed + Polished
Water Resistance
100m
200m
Caseback
Solid

Crystal & Dial

5 specs
Crystal Shape
Flat
AR Coating
Inner
Dial Color
Black
Sunray style, applied and Diamond cut Indices, C1 lume
Indices
Applied
Lume
Luminous
C1

Movement

5 specs
Caliber
SW330-2
Seiko NH34
Beat Rate
28,800 vph
3 vph
Power Reserve
48h
41hh
Jewels
21
24
Complications
GMT, Date
GMT

Pricing

1 specs
MSRP
$2,700
$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 GMT

Owners widely appreciate the Glycine Airman GMT's classic pilot design and consider it a well-built watch, with some noting the 39mm models offer perfect sizing and 200m water resistance. Reviewers praise the plexiglass crystal and matte dial, while some owners find the GMT hand visually similar to the minute hand, making it difficult to read. Accuracy from the Sellita-based movement is described as acceptable, though dial lume pips are noted as weaker than the hands. On balance, owners and reviewers value the Glycine Airman GMT for its faithful reproduction of a classic pilot watch design, despite some legibility concerns with the GMT hand.

Seestern S456 GMT

Owners widely praise the Seestern S456 GMT for its exceptional value and finishing that exceeds expectations, with one owner noting its accuracy surpasses that of their Seiko 5. The dial displays a pearl-like rainbow effect. Some owners would prefer a bidirectional bezel over the current unidirectional one. The Seestern S456 GMT features an NH34 movement, a 39.5mm case, sapphire crystal, and an adjustable clasp. On balance, owners rate the Seestern S456 GMT highly for its impressive finishing and value proposition at its price point.

From video reviewers

The watch features stunning, detailed finishing that is difficult to top. Reviewers did not reach a consensus on any weaknesses.

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