Side by side

Citizen Eco-DrivevsFortis Flieger F-43 Bicompax

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

Eco-Drive
CitizenEco-Drive
MSRP $338
Flieger F-43 Bicompax
FortisFlieger F-43 Bicompax
MSRP $4,180

At a glance

13 of 29 specs differ
Diameter
Eco-Drive42.3mm
Flieger F-43 Bicompax43mm
Power Reserve
Eco-Drive40h
Flieger F-43 Bicompax58h
Water Resistance
Eco-Drive100m
Flieger F-43 Bicompax200m
MSRP
Eco-Drive$338
Flieger F-43 Bicompax$4,180

Full specifications

Case

6 specs
Category
Casual
Chronograph
Diameter
42.3mm
43mm
Thickness
12mm
14.5mm
Lug-to-Lug
46mm
Lug Width
20mm
22mm
Water Resistance
100m
200m

Crystal & Dial

2 specs
Crystal
Mineral
Sapphire
Dial Color
Green
Original

Movement

4 specs
Caliber
J800
Sellita SW510 BH a
Type
Solar
Automatic
Power Reserve
40h
58h
Jewels
25
27

Pricing

1 specs
MSRP
$338
$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 Eco-Drive

Citizen Eco-Drive watches are widely praised for exceptional durability and reliability, with many owners reporting theirs lasting over a decade without issue and some even suggesting they are "Buy It For Life" (BIFL) models. Owners appreciate the ease of use and reliability of the solar-powered quartz movement, with one noting their watch was only off by 2 minutes after five years of disuse. Specific models are noted for their engineering marvels, such as the world's thinnest light-powered watch at 2.98mm thick, a 100-day power reserve, and materials like cermet bezels and titanium construction with sapphire crystals. However, a few users have experienced malfunctions, including one chronograph that stopped keeping time shortly after purchase, requiring a lengthy warranty repair. The battery can degrade and may need replacement after 20+ years, and owners suggest keeping the watch charged in light to prolong its life.

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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