Side by side

Formex Reef 39.5 mmvsWilliam Wood Triumph Chronograph

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

Reef 39.5 mm
FormexReef 39.5 mm
MSRP $2,230
Triumph Chronograph
William WoodTriumph Chronograph
MSRP $2,525

At a glance

12 of 29 specs differ
Diameter
Reef 39.5 mm39.5mm
Triumph Chronograph41mm
Power Reserve
Reef 39.5 mm56h
Triumph Chronograph40h
Water Resistance
Reef 39.5 mm300m
Triumph Chronograph100m
MSRP
Reef 39.5 mm$2,230
Triumph Chronograph$2,525

Full specifications

Case

7 specs
Category
Diver
Chronograph
Diameter
39.5mm
41mm
Thickness
11mm
16mm
Lug-to-Lug
45.5mm
49.5mm
Lug Width
22mm
20mm
Material
Stainless Steel
316L Stainless Steel
Water Resistance
300m
100m

Crystal & Dial

2 specs
Dial Color
Bahama Blue
Steel
Lume
Super-LumiNova
None

Movement

2 specs
Caliber
Sellita SW300-1
Sellita SW510
Power Reserve
56h
40h

Pricing

1 specs
MSRP
$2,230
$2,525

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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.

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.

William Wood Triumph Chronograph

The William Wood Triumph Chronograph is a Swiss-made chronograph featuring a 41mm stainless steel case and a Sellita SW510 movement. Reviewers highlight its firefighting-inspired design, including a sandwich dial, unique sub-dials, and upcycled fire hose straps. The watch has a 48-hour power reserve, though the movement is often credited with up to 56 hours. Its 16.5mm height and 49.5mm lug-to-lug measurement mean it wears large on a 7-inch wrist, and the handset is described as flat and blocky. Overall, reviewers appreciate the novel design elements and thematic execution of the William Wood Triumph Chronograph.

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