Side by side

Hamilton Khaki Aviation Khaki Pilot Pioneer Auto ChronovsGruppo Gamma Field III GMT

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

Field III GMT
Gruppo GammaField III GMT
MSRP $459

At a glance

12 of 29 specs differ
Diameter
Khaki Aviation Khaki Pilot Pioneer Auto Chrono41mm
Field III GMT40mm
Power Reserve
Khaki Aviation Khaki Pilot Pioneer Auto Chrono60h
Field III GMT41h
Water Resistance
Khaki Aviation Khaki Pilot Pioneer Auto Chrono100m
Field III GMT200m
MSRP
Khaki Aviation Khaki Pilot Pioneer Auto Chrono$1,995
Field III GMT$459

Full specifications

Case

5 specs
Category
Chronograph
GMT
Diameter
41mm
40mm
Thickness
16mm
14mm
Lug-to-Lug
46mm
48.5mm
Water Resistance
100m
200m

Crystal & Dial

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

Movement

3 specs
Caliber
H-31
Seiko Instruments NH38A
Power Reserve
60h
41h
Complications
None
GMT

Pricing

1 specs
MSRP
$1,995
$459

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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.

Hamilton Khaki Aviation Khaki Pilot Pioneer Auto Chrono

Owners widely praise the Hamilton Khaki Aviation Khaki Pilot Pioneer Auto Chrono for its excellent dial legibility and unique, vintage-inspired design, with some noting its thinness and 72-hour power reserve. Reviewers highlight its charismatic, function-forward military aesthetic and attractive dial execution. The watch is considered a wise starting point for a chronograph under $2,000, with observed accuracy around +/- 4 seconds per day and a 60-hour power reserve. Some owners find the non-screw-down crown limits water confidence, and one reviewer notes the mineral crystal scratches more easily than sapphire. The price is considered a bit punchy by one source. On balance, owners and reviewers rate the Hamilton Khaki Aviation Khaki Pilot Pioneer Auto Chrono highly for its handsome, utilitarian design and value.

Gruppo Gamma Field III GMT

Owners praise the Gruppo Gamma Field III GMT for its look and value, with specific mentions of its sandwich dial and comfortable OEM straps. One owner notes incredible quality for the price across their Gruppo Gamma watches. The watch features a 40mm brushed stainless steel case, box sapphire crystal, and a Seiko NH34A movement with a 41-hour power reserve and stated accuracy of -20~+40 s/day. Some find the lack of a date window a drawback for a GMT, and question its differentiation from other NH34-powered watches. On balance, owners and reviewers find the Gruppo Gamma Field III GMT to be a good value with quality construction for its price point.

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