Side by side

Citizen Series 8 870vsFortis Flieger F-43 Bicompax

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

Series 8 870
CitizenSeries 8 870
MSRP $1,595
Flieger F-43 Bicompax
FortisFlieger F-43 Bicompax
MSRP $4,180

At a glance

12 of 29 specs differ
Diameter
Series 8 87040.8mm
Flieger F-43 Bicompax43mm
Power Reserve
Series 8 87050h
Flieger F-43 Bicompax58h
Water Resistance
Series 8 870100m
Flieger F-43 Bicompax200m
MSRP
Series 8 870$1,595
Flieger F-43 Bicompax$4,180

Full specifications

Case

6 specs
Category
Dress
Chronograph
Diameter
40.8mm
43mm
Thickness
12mm
14.5mm
Lug-to-Lug
46mm
Lug Width
11mm
22mm
Water Resistance
100m
200m

Crystal & Dial

2 specs
AR Coating
Underside
Inner
Dial Color
Grey
Original

Movement

3 specs
Caliber
0950
Sellita SW510 BH a
Power Reserve
50h
58h
Jewels
25
27

Pricing

1 specs
MSRP
$1,595
$4,180

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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 sharp 40mm steel case with unique bezel construction and a glossy dial featuring finely brushed and polished applied hour markers. It is powered by the in-house caliber 0950 automatic movement, which operates at 4Hz and offers a 50-hour power reserve with enhanced magnetic resistance. The limited edition features a black Duratect DLC coated case, a carbon fiber dial, and is regulated to -5/+10 seconds per day. On balance, reviewers highlight the Series 8 870's distinctive case finishing and the robust in-house movement as key strengths.

Fortis Flieger F-43 Bicompax

Owners widely praise the Fortis Original for its tool-watch aesthetic, legibility, and robust construction, with many noting excellent lume that lasts all night and precise day/date changes at midnight. The brushed stainless steel case is well-finished, and the 38mm size is considered comfortable and well-weighted despite being smaller than modern watches. Accuracy figures range from +2 seconds/day to +8 seconds/day, and some owners compare Fortis quality favorably to Omega. However, some users find the MSRP too high compared to brands like Sinn and Damasko, and one owner reported internal parts dislodging from a limited edition model. Concerns have also been raised about stripped lug screws on B-42 models and potential parts shortages due to past bankruptcy protection filings. Overall, owners rate the Fortis Original highly for its durable construction and tool-watch functionality at a competitive price point.

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