Side by side

Praesidus C-47 D-day - Aluminum PatinavsFormex Reef 39.5 mm

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

C-47 D-day - Aluminum Patina
PraesidusC-47 D-day - Aluminum Patina
MSRP $550
Reef 39.5 mm
FormexReef 39.5 mm
MSRP $2,230

At a glance

11 of 29 specs differ
Diameter
C-47 D-day - Aluminum Patina38mm
Reef 39.5 mm39.5mm
Power Reserve
C-47 D-day - Aluminum Patina40h
Reef 39.5 mm56h
Water Resistance
C-47 D-day - Aluminum Patina100m
Reef 39.5 mm300m
MSRP
C-47 D-day - Aluminum Patina$550
Reef 39.5 mm$2,230

Full specifications

Case

6 specs
Category
Field
Diver
Diameter
38mm
39.5mm
Lug-to-Lug
45mm
45.5mm
Lug Width
18mm
22mm
Material
316L Stainless Steel
Stainless Steel
Water Resistance
100m
300m

Crystal & Dial

2 specs
Dial Color
C-47 D-Day - Aluminum Patina
Bahama Blue
Lume
None
Super-LumiNova

Movement

2 specs
Caliber
Seiko NH35
Sellita SW300-1
Power Reserve
40h
56h

Pricing

1 specs
MSRP
$550
$2,230

Follow this matchup

Get a note when Praesidus C-47 D-day - Aluminum Patina vs Formex Reef 39.5 mm gets more votes, a community discussion, or a price drop. No account needed.

What people say

Owners + reviewers, side by side

Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.

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.

Formex Reef 39.5 mm

The Formex Reef 39.5 mm is widely praised for its refined finishing, comfortable and well-proportioned case design, and impressive specifications for its price point, including COSC-certified Sellita SW300-1 movement and 300m water resistance. Owners and reviewers highlight the tool-less micro-adjust clasp and quick-release spring bars as practical features. Some reviewers note that the 22mm lug width feels slightly disproportionate to the smaller case, and the bracelet could benefit from more taper, though this is a point of contention for some owners who value the overall package. A prototype crown protrusion issue is noted as being addressed for production. On balance, owners and reviewers rate the Formex Reef 39.5 mm highly for its excellent value and well-executed design.

Keep exploring

More watches worth a look

Matched to the watches above on size, movement, style and price — microbrands first. Open any one to dig in.

Adjacent matchups

People also compared

Comparisons nearby in the catalog — alternatives to the watches above paired against the matchup.