Side by side

Serica Ref. 5303 Diving ChronometervsFortis Flieger F-43 Triple-GMT

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

Ref. 5303 Diving Chronometer
SericaRef. 5303 Diving Chronometer
MSRP $1,768
Flieger F-43 Triple-GMT
FortisFlieger F-43 Triple-GMT
MSRP $4,840

At a glance

13 of 29 specs differ
Diameter
Ref. 5303 Diving Chronometer39mm
Flieger F-43 Triple-GMT43mm
Power Reserve
Ref. 5303 Diving Chronometer42h
Flieger F-43 Triple-GMT56h
Water Resistance
Ref. 5303 Diving Chronometer300m
Flieger F-43 Triple-GMT200m
MSRP
Ref. 5303 Diving Chronometer$1,768
Flieger F-43 Triple-GMT$4,840

Full specifications

Case

6 specs
Category
Diver
GMT
Diameter
39mm
43mm
Thickness
12.2mm
14mm
Lug-to-Lug
46.5mm
Lug Width
20mm
22mm
Water Resistance
300m
200m

Crystal & Dial

3 specs
AR Coating
Yes
Inner
Dial Color
Enamel Black
Original
Lume
Super-LumiNova
None

Movement

3 specs
Caliber
M100 COSC
Sellita SW330-2
Power Reserve
42h
56h
Complications
COSC
None

Pricing

1 specs
MSRP
$1,768
$4,840

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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.

Serica Ref. 5303 Diving Chronometer

Owners widely praise the Serica Ref. 5303 Diving Chronometer for its excellent wearability, definitive style, and smooth, confident bezel action. The dual scale on the bezel is noted as surprisingly useful, and the crown action, winding, and hacking are reported to work perfectly. One owner describes the Serica 5303-3 as gorgeous and unique, though another notes the crown can appear comically large. On balance, owners rate the Serica Ref. 5303 Diving Chronometer highly for its blend of unique design and robust functionality.

Fortis Flieger F-43 Triple-GMT

The Fortis Flieger F-43 Triple-GMT is widely praised for its stunning dial execution, COSC-certified Kenissi WERK 13 movement with a 70-hour power reserve, and legible Brixtrack luminous indices. Owners and reviewers highlight the surprisingly wearable 43mm titanium case and bracelet, noting its lightness and comfort despite the size, with one source specifically mentioning a quick-adjustable extension. The watch offers 200m water resistance and features a Synchroline indicator. However, some owners note the titanium scratches easily and the bracelet can be difficult to size. The watch is priced at €4,500. On balance, owners and reviewers rate the Fortis Flieger F-43 Triple-GMT highly for its purpose-focused pilot's watch design and innovative movement.

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