Side by side

Hamilton Khaki Field King AutovsSeiko 5 Sports Field series

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 Field King Auto

Owners and reviewers widely praise the Hamilton Khaki Field King Auto for its 80-hour power reserve, hacking capability, and snappy day-date function, with accuracy figures ranging from +1 to +5 seconds per day. The watch is also noted for its legibility, attractive dial options, and 100m water resistance. Some owners find the stock strap stiff and the case finishing lacks fine detail, while others mention the lume is decent but fades significantly after about 30 minutes. The lack of an anti-reflective coating on the sapphire crystal is a recurring point, and the crown does not feel like it fully pushes in for some. On balance, owners and reviewers rate the Hamilton Khaki Field King Auto highly for its robust feature set and value, particularly its day-date complication and extended power reserve.

From video reviewers

The 80-hour power reserve from the H-40 movement is a significant advantage. The lack of AR coating on the sapphire crystal hinders legibility in direct light, and the 50-meter water resistance is limited for a field watch. Reviewers disagreed on the watch case geometry and ergonomics, with one noting it contributed to buyer's remorse and another suggesting it should offer a comfortable fit.

Seiko 5 Sports Field series

The Seiko 5 Sports Field series is praised for its value, offering an accessible explorer-style watch with a GMT complication and excellent legibility thanks to LumiBrite on the dial and bezel. The watches feature a 41mm stainless steel case, 100m water resistance, and are powered by either the 4R36 or 4R34 movement, both with a 41-hour power reserve. One reviewer notes the inclusion of a compass bezel with a lumed pearl and fully lumed Arabic numerals on the dial for the non-GMT models. Overall, reviewers consider the Seiko 5 Sports Field GMT models good value under 500 euros.

At a glance

13 of 29 specs differ
Diameter
Khaki Field King Auto40mm
5 Sports Field series39.4mm
Power Reserve
Khaki Field King Auto80h
5 Sports Field series41h
Water Resistance
Khaki Field King Auto50m
5 Sports Field series100m
MSRP
Khaki Field King Auto$845
5 Sports Field series$315

Full specifications

Case

5 specs
Category
Field
Sport
Diameter
40mm
39.4mm
Thickness
11.15mm
13.2mm
Lug-to-Lug
0mm
48.1mm
Water Resistance
50m
100m

Crystal & Dial

4 specs
Crystal
Sapphire
Hardlex
Crystal Shape
Curved
Dial Color
Black
Lume
None
LumiBrite on hands and index(es)

Movement

3 specs
Caliber
H-40 (ETA 2834-2 base)
Seiko 4R36
Power Reserve
80h
41h
Jewels
0
24

Pricing

1 specs
MSRP
$845
$315
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