Side by side

Citizen Series 8 870vsHamilton Khaki Field King Auto

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

Series 8 870
CitizenSeries 8 870
MSRP $1,095
Khaki Field King Auto
HamiltonKhaki Field King Auto
MSRP $845

At a glance

10 of 29 specs differ
Diameter
Series 8 87039mm
Khaki Field King Auto40mm
Power Reserve
Series 8 87042h
Khaki Field King Auto80h
Water Resistance
Series 8 870100m
Khaki Field King Auto50m
MSRP
Series 8 870$1,095
Khaki Field King Auto$845

Full specifications

Case

5 specs
Category
Sport
Field
Diameter
39mm
40mm
Thickness
12mm
11.15mm
Lug Width
11mm
20mm
Water Resistance
100m
50m

Crystal & Dial

2 specs
AR Coating
Underside
Inner
Dial Color
Green
Black

Movement

2 specs
Caliber
9051
H-40
Power Reserve
42h
80h

Pricing

1 specs
MSRP
$1,095
$845

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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.

Citizen Series 8 870

The Citizen Series 8 870 is praised for its compelling value proposition and modern Japanese design with a sporty edge. Reviewers note its 40mm steel case, glossy dial with applied markers, and the in-house Calibre 0950 automatic movement offering 50 hours of power reserve and enhanced magnetic resistance. The flat sapphire crystal is noted to collect fingerprints, and the solid caseback omits a view of the movement. The limited edition variant features a 40.8mm black DLC-coated case, a carbon fiber dial, and the 0950 movement regulated to -5/+10 seconds per day. Overall, the Citizen Series 8 870 is viewed as a strong offering for its blend of design and features.

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.

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