Side by side

Oak & Oscar The Jackson Big EyevsTissot Gentleman Open Heart

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

The Jackson Big Eye
Oak & OscarThe Jackson Big Eye
MSRP $3,150
Gentleman Open Heart
TissotGentleman Open Heart
MSRP $1,025

At a glance

15 of 29 specs differ
Diameter
The Jackson Big Eye40mm
Gentleman Open Heart40mm
Power Reserve
The Jackson Big Eye60 hoursh
Gentleman Open Heart80h
Water Resistance
The Jackson Big Eye50m
Gentleman Open Heart100m
MSRP
The Jackson Big Eye$3,150
Gentleman Open Heart$1,025

Full specifications

Case

5 specs
Thickness
14mm
11.5mm
Lug-to-Lug
46.4mm
40mm
Lug Width
20mm
21mm
Finish
Brushed
Brushed and polished
Water Resistance
50m
100m

Crystal & Dial

5 specs
Crystal Shape
Double-domed
Domed
AR Coating
Underside
Yes
Dial Color
White
Silver
Indices
Baton
Indexes
Lume
Super-LumiNova
Super-LumiNova ®

Movement

4 specs
Caliber
Eterna Caliber 39 (Cal. 3907M)
11 1/2'''
Type
Manual
Automatic
Beat Rate
4 vph
28,800 vph
Power Reserve
60 hoursh
80h

Pricing

1 specs
MSRP
$3,150
$1,025

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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 Big Eye

Oak & Oscar The Jackson Big Eye is praised for its balanced design and fine details, featuring a prominent "Big Eye" 30-minute sub-register for improved readability, reminiscent of vintage chronographs. It is powered by the Eterna EMC 3907M manual wind movement with a 60-hour power reserve, column wheel, and flyback function, housed in a 40mm stainless steel case. This limited edition of 50 pieces was priced at $3,150 and included two Horween leather straps and a wallet. On balance, reviewers highlight the Jackson Big Eye's enthusiast-spec chronograph function and readable subdial as key strengths.

Tissot Gentleman Open Heart

Owners widely praise the Tissot Gentleman Open Heart for its versatile dressy-sporty aesthetic and elegant sunburst dial finish, with one owner preferring its less shiny blue dial compared to other versions. The watch offers excellent fit and bracelet adjustability, and its modified Powermatic 80 movement achieves COSC-level accuracy of -3 to +5 seconds/day, though the seconds hand movement is slightly less smooth at 6 movements per second. However, one owner reported the watch arrived non-functional, requiring a return due to an inoperable movement. On balance, owners rate the Tissot Gentleman Open Heart highly for its aesthetic appeal and accurate timekeeping, despite a reported instance of a faulty movement.

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