Side by side

Fortis Flieger F-43 BicompaxvsGrand Seiko SLGA015

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
SLGA015
Grand SeikoSLGA015
MSRP $12,600

At a glance

13 of 29 specs differ
Diameter
Flieger F-43 Bicompax43mm
SLGA01543.8mm
Power Reserve
Flieger F-43 Bicompax58h
SLGA015120h
Water Resistance
Flieger F-43 Bicompax200m
SLGA015200m
MSRP
Flieger F-43 Bicompax$4,180
SLGA015$12,600

Full specifications

Case

6 specs
Category
Chronograph
Diver
Diameter
43mm
43.8mm
Thickness
14.5mm
13.8mm
Lug-to-Lug
51.5mm
Lug Width
22mm
23mm
Material
Stainless Steel
Titanium

Crystal & Dial

2 specs
AR Coating
Inner
Yes
Dial Color
Original
Black

Movement

4 specs
Caliber
Sellita SW510 BH a
9RA5
Type
Automatic
Spring Drive
Power Reserve
58h
120h
Jewels
27
25

Pricing

1 specs
MSRP
$4,180
$12,600

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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.

Grand Seiko SLGA015

The Grand Seiko SLGA015 is widely praised for its exceptional accuracy, with owners reporting performance far exceeding the stated 10 seconds per month. The Spring Drive movement's smooth sweep and 5-day power reserve are also noted strengths, as is the lighter titanium case construction. However, some owners find the bracelet extension non-intuitive, and one noted the clasp scratched easily. The watch features a nature-inspired, wave-like dial texture. Overall, owners rate the Grand Seiko SLGA015 highly for its impressive accuracy and quality construction.

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