Side by side

Citizen Series 8 831vsHamilton Khaki Aviation Khaki Pilot Pioneer Auto Chrono

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

Series 8 831
CitizenSeries 8 831
MSRP $1,095

At a glance

9 of 29 specs differ
Diameter
Series 8 83140mm
Khaki Aviation Khaki Pilot Pioneer Auto Chrono41mm
Power Reserve
Series 8 83142h
Khaki Aviation Khaki Pilot Pioneer Auto Chrono60h
Water Resistance
Series 8 831100m
Khaki Aviation Khaki Pilot Pioneer Auto Chrono100m
MSRP
Series 8 831$1,095
Khaki Aviation Khaki Pilot Pioneer Auto Chrono$1,995

Full specifications

Case

4 specs
Category
Sport
Chronograph
Diameter
40mm
41mm
Thickness
12mm
16mm
Lug Width
20mm
22mm

Crystal & Dial

2 specs
AR Coating
Underside
Inner
Dial Color
Green
Beige

Movement

2 specs
Caliber
9051
H-31
Power Reserve
42h
60h

Pricing

1 specs
MSRP
$1,095
$1,995

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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 8 831

Owners widely praise the Citizen Series 8 831 for its finishing, with one owner noting it exceeded expectations. Reviewers highlight the textured Ice Blue dial and the bracelet's play of light, contributing to a comfortable and luxurious feel on the wrist. The watch features a 40mm ion-plated stainless steel case, a sapphire crystal, and 100 meters of water resistance. It is powered by the in-house Miyota Caliber 9051 automatic movement, which has a 42-hour power reserve and an accuracy range of -10 to +20 seconds per day. On balance, owners and reviewers rate the Citizen Series 8 831 highly for its impressive finishing and dial design at its price point.

From video reviewers

The case finishing, with its contrasting brushed and polished surfaces, is a notable strength. The 40mm case size and comfortable fit are also consistently mentioned. Reviewers did not reach a consensus on any weaknesses.

Hamilton Khaki Aviation Khaki Pilot Pioneer Auto Chrono

Owners widely praise the Hamilton Khaki Aviation Khaki Pilot Pioneer Auto Chrono for its excellent dial legibility and unique, vintage-inspired design, with some noting its thinness and 72-hour power reserve. Reviewers highlight its charismatic, function-forward military aesthetic and attractive dial execution. The watch is considered a wise starting point for a chronograph under $2,000, with observed accuracy around +/- 4 seconds per day and a 60-hour power reserve. Some owners find the non-screw-down crown limits water confidence, and one reviewer notes the mineral crystal scratches more easily than sapphire. The price is considered a bit punchy by one source. On balance, owners and reviewers rate the Hamilton Khaki Aviation Khaki Pilot Pioneer Auto Chrono highly for its handsome, utilitarian design and value.

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