Side by side

Hamilton Khaki Field Auto ChronovsSeiko Prospex SPEEDTIMER

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
Prospex SPEEDTIMER
SeikoProspex SPEEDTIMER
MSRP $3,000

At a glance

10 of 29 specs differ
Diameter
Khaki Field Auto Chrono42mm
Prospex SPEEDTIMER42.5mm
Power Reserve
Khaki Field Auto Chrono60h
Prospex SPEEDTIMER45h
Water Resistance
Khaki Field Auto Chrono100m
Prospex SPEEDTIMER100m
MSRP
Khaki Field Auto Chrono$2,175
Prospex SPEEDTIMER$3,000

Full specifications

Case

3 specs
Diameter
42mm
42.5mm
Thickness
14.5mm
15.1mm
Lug-to-Lug
46mm
50mm

Crystal & Dial

3 specs
Crystal Shape
Flat
Curved
AR Coating
Inner
Anti-reflective coating on inner surface
Lume
None
LumiBrite on hands and index(es)

Movement

3 specs
Caliber
H-21
8R46
Power Reserve
60h
45h
Jewels
25
34

Pricing

1 specs
MSRP
$2,175
$3,000

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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.

Seiko Prospex SPEEDTIMER

Owners widely praise the Seiko Prospex SPEEDTIMER for its attractive vintage-inspired design and compact 39mm size, with one owner finding the red dial unique and gorgeous. Reviewers and owners note the solar-powered quartz movement, with one owner considering $700 expensive for this specification and another wishing for a thinner case. The SPEEDTIMER is described as a sturdy and reliable everyday watch, though one owner questioned its resale value. Overall, owners and reviewers appreciate the Seiko Prospex SPEEDTIMER for its stylish, compact design and solar functionality, despite some finding the price point and case thickness slightly high.

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