Side by side

Glycine Airman GMTvsMarathon JDD (Jumbo Day/Date) Anthracite Diver's Automatic

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

Airman GMT
GlycineAirman GMT
MSRP $1,295
JDD (Jumbo Day/Date) Anthracite Diver's Automatic
MarathonJDD (Jumbo Day/Date) Anthracite Diver's Automatic
MSRP $3,250

At a glance

19 of 29 specs differ
Diameter
Airman GMT45mm
JDD (Jumbo Day/Date) Anthracite Diver's Automatic46mm
Power Reserve
Airman GMT
JDD (Jumbo Day/Date) Anthracite Diver's Automatic40h
Water Resistance
Airman GMT200m
JDD (Jumbo Day/Date) Anthracite Diver's Automatic300m
MSRP
Airman GMT$1,295
JDD (Jumbo Day/Date) Anthracite Diver's Automatic$3,250

Full specifications

Case

8 specs
Category
GMT
Diver
Diameter
45mm
46mm
Thickness
13mm
18mm
Lug-to-Lug
55mm
Material
Stainless Steel
316L Stainless Steel (Anthracite IP)
Finish
Brushed and polished
Water Resistance
200m
300m
Caseback
Solid

Crystal & Dial

4 specs
Crystal Shape
Flat
AR Coating
Inner
Dial Color
Black
Anthracite
Indices
Applied

Movement

6 specs
Caliber
Sellita SW220-1
Type
Quartz
Automatic
Beat Rate
28,800 vph
Power Reserve
40h
Jewels
1
25
Complications
GMT
None

Pricing

1 specs
MSRP
$1,295
$3,250

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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 an easy-to-read dial layout. However, some owners find the GMT hand visually similar to the minute hand, suggesting a red paint for better distinction, a sentiment echoed by reviewers who note the thin, unlumed GMT hand can be hard to read against the black dial. One owner praises the 39mm sizing and 200m water resistance of a related model, noting its good build and finishing from when Glycine was independent. On balance, owners and reviewers find the Glycine Airman GMT offers practical multi-time zone tracking, though legibility of the GMT hand is a recurring point of discussion.

Marathon JDD (Jumbo Day/Date) Anthracite Diver's Automatic

Owners widely praise the Marathon JDD (Jumbo Day/Date) Anthracite Diver's Automatic as a tough, underrated tool watch with lifestyle appeal, highlighting its robust build and tritium lume for excellent legibility. However, its 46mm size is a common criticism, with some finding it heavy and top-heavy, and the OEM rubber strap stiff. One owner noted the watch runs about 10 seconds fast after three days, and the ETA 2836-2 movement offers approximately two days of power reserve. On balance, owners and reviewers rate the Marathon JDD (Jumbo Day/Date) Anthracite Diver's Automatic highly for its robust tool-watch build and legibility, despite its substantial size.

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