Side by side

Citizen Atomic Perpetual A-TvsFortis Flieger F-43 Bicompax

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

Flieger F-43 Bicompax
FortisFlieger F-43 Bicompax
MSRP $4,180

At a glance

12 of 29 specs differ
Diameter
Atomic Perpetual A-T41mm
Flieger F-43 Bicompax43mm
Power Reserve
Atomic Perpetual A-T40h
Flieger F-43 Bicompax58h
Water Resistance
Atomic Perpetual A-T200m
Flieger F-43 Bicompax200m
MSRP
Atomic Perpetual A-T
Flieger F-43 Bicompax$4,180

Full specifications

Case

5 specs
Category
Pilot
Chronograph
Diameter
41mm
43mm
Thickness
12mm
14.5mm
Lug-to-Lug
46mm
Lug Width
20mm
22mm

Crystal & Dial

2 specs
AR Coating
Underside
Inner
Dial Color
Blue
Original

Movement

4 specs
Caliber
H800
Sellita SW510 BH a
Type
Solar
Automatic
Power Reserve
40h
58h
Jewels
25
27

Pricing

1 specs
MSRP
$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 Atomic Perpetual A-T

Owners widely praise the Citizen Atomic Perpetual A-T for its handsome appearance, solid fit and finish, comfortable bracelet, and intuitive world time function. Its perpetual calendar and atomic timekeeping are highlighted as major conveniences, maintaining accuracy within 0.5 seconds even without syncing, and owners appreciate its "set & forget" nature and solar charging. The watch features a modest, stylish blue dial with delicate design details and a clutter-free layout, along with high water resistance without a screw-down crown and light titanium construction. Some find the dial unnecessarily busy, and its time zone functionality is noted as less useful outside the US, with atomic sync being less compelling below the equator. Accuracy is reported as +/-15 seconds per month if not syncing, but +/-0 seconds if it syncs via radio signal. Some find the watch a bit on the large side.

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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