Side by side

Hamilton Khaki Aviation Pilot Pioneer Mechanical ChronovsOak & Oscar The Jackson Big Eye

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 Pilot Pioneer Mechanical Chrono

Owners and reviewers widely praise the Hamilton Khaki Aviation Pilot Pioneer Mechanical Chrono for its authentic military design, attractive dial execution, and intriguing asymmetrical case, with many appreciating its utilitarian feel and vintage vibe. The hand-wound H-51-Si movement, offering a 60-hour power reserve and accuracy around +5 to +7 seconds per day, is also noted positively, as is the satisfying feel of manual winding. Some owners find the 36mm case size light and versatile, while others note it wears larger than its dimensions suggest. However, several sources point to the mineral crystal as a drawback compared to sapphire, and the lume is generally described as weak. The included strap is frequently criticized for being too long and uncomfortable, with many preferring it on a NATO strap. On balance, owners and reviewers rate the Hamilton Khaki Aviation Pilot Pioneer Mechanical Chrono highly for its compelling vintage military aesthetic and solid value proposition.

From video reviewers

The vintage-inspired design referencing a 1970s RAF model is a shared strength. Reviewers did not reach a consensus on any weaknesses or specific points of disagreement.

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.

At a glance

16 of 29 specs differ
Diameter
Khaki Aviation Pilot Pioneer Mechanical Chrono40mm
The Jackson Big Eye40mm
Power Reserve
Khaki Aviation Pilot Pioneer Mechanical Chrono60h
The Jackson Big Eye60 hoursh
Water Resistance
Khaki Aviation Pilot Pioneer Mechanical Chrono100m
The Jackson Big Eye50m
MSRP
Khaki Aviation Pilot Pioneer Mechanical Chrono$2,445
The Jackson Big Eye$3,150

Full specifications

Case

6 specs
Category
Pilot
Chronograph
Thickness
14.35mm
14mm
Lug-to-Lug
50mm
46.4mm
Lug Width
22mm
20mm
Finish
Brushed
Water Resistance
100m
50m

Crystal & Dial

5 specs
Crystal Shape
Double-domed
AR Coating
Underside
Dial Color
Blue
White
Indices
Baton
Lume
None
Super-LumiNova

Movement

4 specs
Caliber
Hamilton H-51
Eterna Caliber 39 (3907M)
Beat Rate
0 vph
4 vph
Power Reserve
60h
60 hoursh
Jewels
0
25

Pricing

1 specs
MSRP
$2,445
$3,150
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