Side by side

Bremont Altitude Perpetual Calendar GMTvsFortis Flieger F-43 Bicompax

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

Altitude Perpetual Calendar GMT
BremontAltitude Perpetual Calendar GMT
MSRP $38,450
Flieger F-43 Bicompax
FortisFlieger F-43 Bicompax
MSRP $4,180

At a glance

10 of 29 specs differ
Diameter
Altitude Perpetual Calendar GMT42mm
Flieger F-43 Bicompax43mm
Power Reserve
Altitude Perpetual Calendar GMT40h
Flieger F-43 Bicompax58h
Water Resistance
Altitude Perpetual Calendar GMT
Flieger F-43 Bicompax200m
MSRP
Altitude Perpetual Calendar GMT$38,450
Flieger F-43 Bicompax$4,180

Full specifications

Case

5 specs
Category
GMT
Chronograph
Diameter
42mm
43mm
Thickness
12.65mm
14.5mm
Material
Titanium
Stainless Steel
Water Resistance
200m

Crystal & Dial

1 specs
Dial Color
Blue
Original

Movement

3 specs
Caliber
Sellita SW510 BH a
Power Reserve
40h
58h
Jewels
25
27

Pricing

1 specs
MSRP
$38,450
$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.

Bremont Altitude Perpetual Calendar GMT

The Bremont Altitude Perpetual Calendar GMT is a highly exclusive piece, with one owner noting its $44,000 price point raises questions about its target audience and suggesting it may be a limited production showpiece. Reviewers highlight its refined Trip-Tick case, now featuring softer curves, a 42mm diameter, and a 12.23mm thickness in grade 2 titanium, though the oversized crowns are flagged as a potential drawback. Overall, owners and reviewers acknowledge the Bremont Altitude Perpetual Calendar GMT as a distinctive, albeit niche, high-complication offering with a notable case refinement.

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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