Side by side

Fortis Flieger F-43 BicompaxvsSeiko Ice Diver

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
Ice Diver
SeikoIce Diver
MSRP $900

At a glance

11 of 29 specs differ
Diameter
Flieger F-43 Bicompax43mm
Ice Diver45mm
Power Reserve
Flieger F-43 Bicompax58h
Ice Diver70h
Water Resistance
Flieger F-43 Bicompax200m
Ice Diver200m
MSRP
Flieger F-43 Bicompax$4,180
Ice Diver$900

Full specifications

Case

5 specs
Category
Chronograph
Diver
Diameter
43mm
45mm
Thickness
14.5mm
12.9mm
Lug-to-Lug
52.6mm
Lug Width
22mm
20mm

Crystal & Dial

2 specs
Dial Color
Original
Black
Lume
None
LumiBrite

Movement

3 specs
Caliber
Sellita SW510 BH a
6R35
Power Reserve
58h
70h
Jewels
27
24

Pricing

1 specs
MSRP
$4,180
$900

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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.

Seiko Ice Diver

Owners widely praise the Seiko Prospex Sea for its robust build, classic dive watch design, and excellent value, with many highlighting its strong lume and comfortable wearability. Reviewers consistently flag its superior bezel action and overall finishing as standout features for its price point. Some owners find the 43mm case size substantial, with one noting it felt big, thick, and heavy on a 6.5-inch wrist, though others consider it a perfect size. The movement's power reserve is noted as less than newer variants by one reviewer. Overall, owners and reviewers rate the Seiko Prospex Sea highly for its classic design and robust build at an accessible price.

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