Side by side

Hamilton Khaki Field Auto ChronovsOak & Oscar The Jackson Big Eye

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

Khaki Field Auto Chrono
HamiltonKhaki Field Auto Chrono
MSRP $2,175
The Jackson Big Eye
Oak & OscarThe Jackson Big Eye
MSRP $3,150

At a glance

15 of 29 specs differ
Diameter
Khaki Field Auto Chrono42mm
The Jackson Big Eye40mm
Power Reserve
Khaki Field Auto Chrono60h
The Jackson Big Eye60 hoursh
Water Resistance
Khaki Field Auto Chrono100m
The Jackson Big Eye50m
MSRP
Khaki Field Auto Chrono$2,175
The Jackson Big Eye$3,150

Full specifications

Case

5 specs
Diameter
42mm
40mm
Thickness
14.5mm
14mm
Lug-to-Lug
46mm
46.4mm
Finish
Brushed and polished
Brushed
Water Resistance
100m
50m

Crystal & Dial

5 specs
Crystal Shape
Flat
Double-domed
AR Coating
Inner
Underside
Dial Color
Black
White
Indices
Applied
Baton
Lume
None
Super-LumiNova

Movement

4 specs
Caliber
H-21
Eterna Caliber 39 (Cal. 3907M)
Type
Automatic
Manual
Beat Rate
28,800 vph
4 vph
Power Reserve
60h
60 hoursh

Pricing

1 specs
MSRP
$2,175
$3,150

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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 Field Auto Chrono

The Hamilton Khaki Field Auto Chrono is widely praised for its retro military design, value proposition, and reliable ETA movement. Reviewers highlight its 42mm steel case, 100m water resistance, and the H-21 automatic movement offering a 60-hour power reserve. One editorial review notes the unusual dial layout omits a running seconds indicator for symmetry, featuring day and date windows instead. The case is described as black PVD-treated stainless steel with a brushed finish and polished bezel, complemented by a black-on-black dial with dark grey Super-LumiNova and polished Arabic numerals. Overall, owners and reviewers consider the Hamilton Khaki Field Auto Chrono a well-designed tactical sports watch offering a strong combination of style and value.

Oak & Oscar The Jackson Big Eye

Oak & Oscar The Jackson Big Eye is praised for its balanced design and fine details, featuring a prominent "Big Eye" 30-minute sub-register for improved readability, reminiscent of vintage chronographs. It is powered by the Eterna EMC 3907M manual wind movement with a 60-hour power reserve, column wheel, and flyback function, housed in a 40mm stainless steel case. This limited edition of 50 pieces was priced at $3,150 and included two Horween leather straps and a wallet. On balance, reviewers highlight the Jackson Big Eye's enthusiast-spec chronograph function and readable subdial as key strengths.

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