Side by side

Hamilton Khaki Aviation X-Wind Day Date AutovsGruppo Gamma Field III GMT Date

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

What people say

Owners + reviewers, side by side

Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.

Hamilton Khaki Aviation X-Wind Day Date Auto

Owners widely praise the Hamilton Khaki Aviation X-Wind Day Date Auto for its value, technical aesthetic, and versatile wearability with straps. Reviewers and owners alike highlight its excellent legibility, bold Arabic numerals, and the appeal of its pilot watch design, with many appreciating the 80-hour power reserve. Some owners find the crosswind calculation functions unnecessary, and there are mixed views on the dial's font usage and color matching. Lume is frequently noted as weak, and some find the size large or the left-handed crown and pusher setup uncomfortable. Accuracy figures range from gaining 6 seconds in a few days to approximately -6 seconds per day. Overall, owners rate the Hamilton Khaki Aviation X-Wind Day Date Auto highly for its impressive value and functional pilot watch design.

From video reviewers

The H-21 movement's 60-hour power reserve is a notable strength. The large 44mm case size was mentioned as a potential drawback.

Gruppo Gamma Field III GMT Date

Owners widely praise the Gruppo Gamma Field III GMT Date for its awesome looks, quality, and good value. The watch features a 40mm brushed 316L stainless steel case, box sapphire crystal, and 200m water resistance, powered by a Seiko NH34A movement. Some reviewers note the NH34A movement's accuracy can range from -20~+40 seconds per day, though one reviewer reported +5 seconds per day with a regulated movement. The dial's dense layout with Arabic numerals can be overwhelming for some, and one owner found the size unsuitable for smaller wrists. On balance, owners rate the Gruppo Gamma Field III GMT Date highly for its impressive finishing and toolish design at its price point.

At a glance

12 of 29 specs differ
Diameter
Khaki Aviation X-Wind Day Date Auto45mm
Field III GMT Date40mm
Power Reserve
Khaki Aviation X-Wind Day Date Auto80h
Field III GMT Date41h
Water Resistance
Khaki Aviation X-Wind Day Date Auto100m
Field III GMT Date200m
MSRP
Khaki Aviation X-Wind Day Date Auto$1,375
Field III GMT Date$459

Full specifications

Case

5 specs
Category
Pilot
GMT
Diameter
45mm
40mm
Thickness
12.8mm
14mm
Lug-to-Lug
54mm
48.5mm
Water Resistance
100m
200m

Crystal & Dial

3 specs
AR Coating
Yes
Dial Color
Green
Black
Lume
None
Super-LumiNova

Movement

3 specs
Caliber
H-30
Seiko Instruments NH38A
Power Reserve
80h
41h
Complications
None
GMT, Date

Pricing

1 specs
MSRP
$1,375
$459
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