Which is cheaper, the Fortis Flieger F-43 Bicompax or the Seiko Diamond Collection?

At MSRP the Seiko Diamond Collection is the cheaper of the two at $525, against $4,180 for the Fortis Flieger F-43 Bicompax — a $3,655 gap before any retailer discounting.

Which is bigger, the Fortis Flieger F-43 Bicompax or the Seiko Diamond Collection?

The Fortis Flieger F-43 Bicompax wears larger at 43mm versus 32mm for the Seiko Diamond Collection — a 11mm difference across the dial.

Which has better water resistance, the Fortis Flieger F-43 Bicompax or the Seiko Diamond Collection?

The Fortis Flieger F-43 Bicompax is rated to 200m versus 10m for the Seiko Diamond Collection.

Which has a longer power reserve, the Fortis Flieger F-43 Bicompax or the Seiko Diamond Collection?

The Fortis Flieger F-43 Bicompax carries a 58-hour power reserve against 40 hours on the Seiko Diamond Collection.

What movement does the Fortis Flieger F-43 Bicompax run compared to the Seiko Diamond Collection?

Both watches run automatic movements — the Fortis Flieger F-43 Bicompax uses the Sellita SW510 BH a and the Seiko Diamond Collection uses the 6N32.

Side by side

Fortis Flieger F-43 BicompaxvsSeiko Diamond Collection

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

Fortis Flieger F-43 Bicompax

F-43 Bicompax

MSRP $4,180

Seiko Diamond Collection

sur579

MSRP $525

At a glance

11 of 29 specs differ

Diameter

Flieger F-43 Bicompax43mm

Diamond Collection32mm

Power Reserve

Flieger F-43 Bicompax58h

Diamond Collection40h

Water Resistance

Flieger F-43 Bicompax200m

Diamond Collection100m

MSRP

Flieger F-43 Bicompax$4,180

Diamond Collection$525

Full specifications

Case

6 specs

Crystal & Dial

1 specs

Dial Color

Original

Black

Movement

3 specs

Caliber

Sellita SW510 BH a

6N32

Power Reserve

58h

40h

Jewels

Pricing

1 specs

MSRP

$4,180

$525

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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.

WatchUSeek·9

Seiko Diamond Collection

Owners widely praise the Seiko Diamond Collection for its stunning beauty, particularly highlighting the 14 diamonds and the captivating mother-of-pearl dial. Its 33.2mm case size, 100m water resistance, sapphire crystal, and lightweight build are appreciated features contributing to comfortable wear. Some owners find the dial detail is best appreciated in direct sunlight. The gold plating on some models may show fading from desk work over time. Overall, owners rate the Seiko Diamond Collection highly for its dazzling aesthetics and comfortable, well-finished design at its price point.

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