Side by side

Citizen Series 8 831vsFortis Stratoliner S-41

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
Stratoliner S-41
FortisStratoliner S-41
MSRP $5,450

At a glance

12 of 29 specs differ
Diameter
Series 8 83140mm
Stratoliner S-4141mm
Power Reserve
Series 8 83142h
Stratoliner S-4160h
Water Resistance
Series 8 831100m
Stratoliner S-41200m
MSRP
Series 8 831$1,095
Stratoliner S-41$5,450

Full specifications

Case

6 specs
Category
Sport
Chronograph
Diameter
40mm
41mm
Thickness
12mm
14mm
Lug-to-Lug
46mm
Lug Width
20mm
21mm
Water Resistance
100m
200m

Crystal & Dial

2 specs
AR Coating
Underside
Inner
Dial Color
Green
White

Movement

3 specs
Caliber
9051
Manufacture Caliber WERK 17
Power Reserve
42h
60h
Jewels
25
36

Pricing

1 specs
MSRP
$1,095
$5,450

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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.

Fortis Stratoliner S-41

Owners widely praise the Fortis Stratoliner S-41 for its purpose-built design and outstanding details, particularly its space blue lume and bright orange date on the dial. Reviewers note the WERK 17 movement offers a 60-hour power reserve. However, the Fortis Stratoliner S-41's 41mm case thickness and lug-to-lug distance lead some to perceive it as wearing large, and the dial's small text and flat design are flagged as potential drawbacks. Overall, owners and reviewers highlight the Fortis Stratoliner S-41's unique design and innovative movement as its primary strengths.

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