Which is cheaper, the Bremont Altitude 39 Date or the Fortis Flieger F-43 Bicompax?

At MSRP the Fortis Flieger F-43 Bicompax is the cheaper of the two at $4,180, against $4,250 for the Bremont Altitude 39 Date — a $70 gap before any retailer discounting.

Which is bigger, the Bremont Altitude 39 Date or the Fortis Flieger F-43 Bicompax?

The Fortis Flieger F-43 Bicompax wears larger at 43mm versus 39mm for the Bremont Altitude 39 Date — a 4mm difference across the dial.

Which has better water resistance, the Bremont Altitude 39 Date or the Fortis Flieger F-43 Bicompax?

The Fortis Flieger F-43 Bicompax is rated to 200m versus 100m for the Bremont Altitude 39 Date.

Which has a longer power reserve, the Bremont Altitude 39 Date or the Fortis Flieger F-43 Bicompax?

The Fortis Flieger F-43 Bicompax carries a 58-hour power reserve against 40 hours on the Bremont Altitude 39 Date.

What movement does the Bremont Altitude 39 Date run compared to the Fortis Flieger F-43 Bicompax?

Both watches run automatic movements — the Bremont Altitude 39 Date uses the BE-92AE and the Fortis Flieger F-43 Bicompax uses the Sellita SW510 BH a.

Side by side

Bremont Altitude 39 DatevsFortis Flieger F-43 Bicompax

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

Bremont Altitude 39 Date

alt39-dt-ss-si-l-s

MSRP $4,250

Fortis Flieger F-43 Bicompax

F-43 Bicompax

MSRP $4,180

At a glance

11 of 29 specs differ

Diameter

Altitude 39 Date39mm

Flieger F-43 Bicompax43mm

Power Reserve

Altitude 39 Date40h

Flieger F-43 Bicompax58h

Water Resistance

Altitude 39 Date100m

Flieger F-43 Bicompax200m

MSRP

Altitude 39 Date$4,250

Flieger F-43 Bicompax$4,180

Full specifications

Case

6 specs

Crystal & Dial

1 specs

Dial Color

Silver

Original

Movement

3 specs

Caliber

BE-92AE

Sellita SW510 BH a

Power Reserve

40h

58h

Jewels

Pricing

1 specs

MSRP

$4,250

$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 39 Date

Owners and reviewers widely praise the Bremont Altitude 39 Date as a sleek, legible, and everyday-suited pilot's watch, noting its comfortable 39mm 904L steel case and clean dial design. The La Joux-Perret G100 movement is recognized for its 68-hour power reserve and smooth winding feel. Some owners note the bracelet lacks micro-adjustments. On balance, the consensus is that the Bremont Altitude 39 Date is highly regarded for its refined finishing and wearability at 39mm.

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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