Side by side

Citizen Series 8 870vsHamilton Khaki Aviation Pilot Pioneer Mechanical Chrono

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

At a glance

10 of 29 specs differ
Diameter
Series 8 87039mm
Khaki Aviation Pilot Pioneer Mechanical Chrono40mm
Power Reserve
Series 8 87042h
Khaki Aviation Pilot Pioneer Mechanical Chrono60h
Water Resistance
Series 8 870100m
Khaki Aviation Pilot Pioneer Mechanical Chrono100m
MSRP
Series 8 870$1,095
Khaki Aviation Pilot Pioneer Mechanical Chrono$2,445

Full specifications

Case

4 specs
Category
Sport
Pilot
Diameter
39mm
40mm
Thickness
12mm
14.35mm
Lug Width
11mm
22mm

Crystal & Dial

2 specs
AR Coating
Underside
Inner
Dial Color
Green
Blue

Movement

3 specs
Caliber
9051
H-51-Si
Type
Automatic
Manual
Power Reserve
42h
60h

Pricing

1 specs
MSRP
$1,095
$2,445

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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 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.

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