Side by side

Fortis Flieger F-43 BicompaxvsLongines SPIRIT ZULU TIME 1925

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
SPIRIT ZULU TIME 1925
LonginesSPIRIT ZULU TIME 1925
MSRP $4,700

At a glance

22 of 29 specs differ
Diameter
Flieger F-43 Bicompax43mm
SPIRIT ZULU TIME 192539mm
Power Reserve
Flieger F-43 Bicompax58h
SPIRIT ZULU TIME 192572h
Water Resistance
Flieger F-43 Bicompax200m
SPIRIT ZULU TIME 1925100m
MSRP
Flieger F-43 Bicompax$4,180
SPIRIT ZULU TIME 1925$4,700

Full specifications

Case

9 specs
Category
Chronograph
GMT
Diameter
43mm
39mm
Thickness
14.5mm
13.5mm
Lug-to-Lug
46.8mm
Lug Width
22mm
21mm
Material
Stainless Steel
Gold
Finish
Brushed and polished
Water Resistance
200m
100m
Caseback
Solid
Transparent case back with sapphire crystal

Crystal & Dial

5 specs
Crystal Shape
Flat
AR Coating
Inner
Both sides
Dial Color
Original
Black
Indices
Applied
Applied Arabic numerals
Lume
None
Super-LumiNova

Movement

7 specs
Caliber
Sellita SW510 BH a
L844.4
Beat Rate
28,800 vph
25,200 vph
Power Reserve
58h
72h
Jewels
27
0
Hacking
Yes
No
Hand-winding
Yes
No
Complications
None
Hours, minutes, seconds and date, 24 hours hand with time zone mechanism

Pricing

1 specs
MSRP
$4,180
$4,700

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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.

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.

Longines SPIRIT ZULU TIME 1925

The Longines SPIRIT ZULU TIME 1925 is widely praised for its handsome, vintage-inspired two-tone aesthetic, featuring a rose-gold capped bezel and dial accents, and is noted for its segment-leading finishing and solid feel. Owners and reviewers highlight the pleasing combination of precious metal with a rugged character. The watch is powered by the ETA-produced L844.4 automatic GMT movement, which is COSC chronometer certified and offers a 72-hour power reserve, visible through a sapphire caseback. Some reviewers flag the 13.5mm thickness as substantial, and the male endlinks may affect wearability on smaller wrists. The Longines SPIRIT ZULU TIME 1925 is priced at approximately $4,350 and includes a bracelet and an additional NATO strap. Overall, owners and reviewers rate the Longines SPIRIT ZULU TIME 1925 highly for its refined vintage-inspired design and excellent finishing at its price point.

From video reviewers

The Spirit Zulu Time 1925 features excellent finishing and a true GMT function. Reviewers questioned the value proposition due to the rose gold being a cap rather than solid.

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