Side by side

Glycine Airman GMTvsSeiko Prospex Sea

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

Airman GMT
GlycineAirman GMT
MSRP $2,750
Prospex Sea
SeikoProspex Sea
MSRP $625

At a glance

17 of 29 specs differ
Diameter
Airman GMT44mm
Prospex Sea43.8mm
Power Reserve
Airman GMT48h
Prospex Sea41h
Water Resistance
Airman GMT100m
Prospex Sea200m
MSRP
Airman GMT$2,750
Prospex Sea$625

Full specifications

Case

7 specs
Category
GMT
Diver
Diameter
44mm
43.8mm
Thickness
12mm
12.8mm
Lug-to-Lug
48.7mm
Finish
Brushed and polished
Water Resistance
100m
200m
Caseback
Solid

Crystal & Dial

5 specs
Crystal Shape
Flat
AR Coating
Anti-reflective coating on inner surface
Dial Color
Silver
Black
Indices
Applied
Lume
Luminous
LumiBrite on hands, index(es) and bezel

Movement

4 specs
Caliber
SW330-2
4R35
Power Reserve
48h
41h
Jewels
21
23
Complications
GMT, Date
None

Pricing

1 specs
MSRP
$2,750
$625

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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 ability to track three time zones, with some finding the 42mm size appropriate for its functionality. A reviewer notes the polished GMT hand can be difficult to read and lacks lume, while one owner reported an ETA movement with a misaligned GMT hand. Another owner finds the lume pips weaker than the hands.

Seiko Prospex Sea

The Seiko Prospex Sea is widely praised for its excellent value, solid build quality, and comfortable wearability, with many models featuring impressive lume and attractive dials. Owners and reviewers highlight the modern upgrades on classic designs, such as drilled lugs and reliable movements with hacking and hand-winding capabilities. Some models are noted for their refined case finishing and scratch resistance. Accuracy figures vary, with one owner reporting approximately 4 seconds fast per day, while others find the movements offer good performance for the price. Concerns raised by owners and reviewers include clasps that can feel generic or cheap, and lug widths that some find disproportionate to the case size on certain models. The thickness and weight of some Prospex Sea watches are also noted as substantial. The GMT function on specific models is considered secondary and difficult to read for true travel purposes.

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