Side by side

Serica Ref. 5303 Diving ChronometervsPraesidus C-47 D-day - Aluminum Patina

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
C-47 D-day - Aluminum Patina
PraesidusC-47 D-day - Aluminum Patina
MSRP $550

At a glance

14 of 29 specs differ
Diameter
Ref. 5303 Diving Chronometer39mm
C-47 D-day - Aluminum Patina38mm
Power Reserve
Ref. 5303 Diving Chronometer42h
C-47 D-day - Aluminum Patina40h
Water Resistance
Ref. 5303 Diving Chronometer300m
C-47 D-day - Aluminum Patina100m
MSRP
Ref. 5303 Diving Chronometer$1,768
C-47 D-day - Aluminum Patina$550

Full specifications

Case

7 specs
Category
Diver
Field
Diameter
39mm
38mm
Thickness
12.2mm
11mm
Lug-to-Lug
46.5mm
45mm
Lug Width
20mm
18mm
Material
Stainless Steel
316L Stainless Steel
Water Resistance
300m
100m

Crystal & Dial

3 specs
AR Coating
Yes
Inner
Dial Color
Enamel Black
C-47 D-Day - Aluminum Patina
Lume
Super-LumiNova
None

Movement

3 specs
Caliber
M100 COSC
Seiko NH35
Power Reserve
42h
40h
Complications
COSC
None

Pricing

1 specs
MSRP
$1,768
$550

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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.

Praesidus C-47 D-day - Aluminum Patina

The Praesidus C-47 D-day - Aluminum Patina is praised for its 38mm diameter and its dial, crafted from actual C-47 airplane doors, offering a unique patina and historical context. Reviewers note its utilitarian, vintage military aesthetic, enhanced by a sandblasted stainless steel case and acrylic crystal. The watch is equipped with a Miyota 9039 movement, 100m water resistance, and Super-LumiNova for visibility. Accuracy is rated at -10/+30 seconds per day, with a 42-hour power reserve. On balance, reviewers highlight the Praesidus C-47 D-day - Aluminum Patina's historical dial as its most compelling feature, transforming a potentially divisive material into a unique selling point.

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