Side by side

Oak & Oscar The Jackson Big EyevsZelos Spearfish GMT

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
Spearfish GMT
ZelosSpearfish GMT
MSRP $999

At a glance

16 of 29 specs differ
Diameter
The Jackson Big Eye40mm
Spearfish GMT40mm
Power Reserve
The Jackson Big Eye60 hoursh
Spearfish GMT40h
Water Resistance
The Jackson Big Eye50m
Spearfish GMT200m
MSRP
The Jackson Big Eye$3,150
Spearfish GMT$999

Full specifications

Case

6 specs
Category
Chronograph
GMT
Thickness
14mm
13mm
Lug-to-Lug
46.4mm
40mm
Material
Stainless Steel
316L Stainless Steel
Finish
Brushed
Brushed and polished
Water Resistance
50m
200m

Crystal & Dial

5 specs
Crystal Shape
Double-domed
Flat
AR Coating
Underside
Inner
Dial Color
White
Frost
Indices
Baton
Applied
Lume
Super-LumiNova
None

Movement

4 specs
Caliber
Eterna Caliber 39 (Cal. 3907M)
Sellita SW330-2
Type
Manual
Automatic
Beat Rate
4 vph
28,800 vph
Power Reserve
60 hoursh
40h

Pricing

1 specs
MSRP
$3,150
$999

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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.

Zelos Spearfish GMT

The Zelos Spearfish GMT is widely praised for its exceptional value, with reviewers highlighting its superb finishing, flawless machining, and a tool-less micro-adjustment clasp that exceeds its price point. It features a La Joux-Perret G100 movement with a 68-hour power reserve, achieving an average accuracy of +2.6 seconds per day, or a Miyota 9075 movement offering flier-style GMT functionality. The 40mm case and bidirectional 48-click ceramic bezel are well-executed, though one reviewer noted a minor compromise in the end link fit. Overall, owners and reviewers rate the Zelos Spearfish GMT highly for its impressive finishing and value proposition.

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