Side by side

Oak & Oscar The JacksonvsFormex Reef 39.5 mm

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

The Jackson
Oak & OscarThe Jackson
MSRP $2,850
Reef 39.5 mm
FormexReef 39.5 mm
MSRP $2,230

At a glance

16 of 29 specs differ
Diameter
The Jackson40mm
Reef 39.5 mm39.5mm
Power Reserve
The Jackson60 hoursh
Reef 39.5 mm56h
Water Resistance
The Jackson50m
Reef 39.5 mm300m
MSRP
The Jackson$2,850
Reef 39.5 mm$2,230

Full specifications

Case

7 specs
Category
Chronograph
Diver
Diameter
40mm
39.5mm
Thickness
14.5mm
11mm
Lug-to-Lug
46.4mm
45.5mm
Lug Width
20mm
22mm
Finish
Brushed
Brushed and polished
Water Resistance
50m
300m

Crystal & Dial

4 specs
Crystal Shape
Double-domed
Flat
AR Coating
Underside
Inner
Dial Color
Grey
Bahama Blue
Indices
Baton
Applied

Movement

4 specs
Caliber
Eterna Caliber 39 (Cal. 3916M)
Sellita SW300-1
Type
Manual
Automatic
Beat Rate
4 vph
28,800 vph
Power Reserve
60 hoursh
56h

Pricing

1 specs
MSRP
$2,850
$2,230

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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.

Oak & Oscar The Jackson

Oak & Oscar The Jackson is a 40mm flyback chronograph praised for its balanced design and fine details, with reviewers highlighting the readability of the dial, particularly the new blue option and the 12-hour stacked subdial. The watch features a modular Eterna caliber movement, with one version utilizing the 3916M and another the 3907M, and is housed in a 40mm steel case. It is priced at $3,150 and includes two Horween leather straps and a watch wallet. On balance, reviewers find Oak & Oscar The Jackson to be a sporty, subtle chronograph with a comfortable wearability and an easy-to-read dial.

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.

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