Side by side

Jack Mason CantonvsSpinnaker Bradner GMT

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

Canton
Jack MasonCanton
MSRP $1,399
Bradner GMT
SpinnakerBradner GMT
MSRP $299

At a glance

11 of 29 specs differ
Diameter
Canton39mm
Bradner GMT42mm
Power Reserve
Canton68h
Bradner GMT40h
Water Resistance
Canton150m
Bradner GMT180m
MSRP
Canton$1,399
Bradner GMT$299

Full specifications

Case

7 specs
Category
GMT
Diameter
39mm
42mm
Thickness
10.8mm
15mm
Lug-to-Lug
46mm
50mm
Lug Width
20mm
22mm
Material
Stainless Steel
316L Stainless Steel
Water Resistance
150m
180m

Crystal & Dial

1 specs
Dial Color
Black
Brown

Movement

2 specs
Caliber
La Joux Perret G100
Seiko NH34A
Power Reserve
68h
40h

Pricing

1 specs
MSRP
$1,399
$299

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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.

Jack Mason Canton

The Jack Mason Canton is praised for its high-quality finishing, sophisticated appearance, and robust build, with owners finding it stunning in person and noting its scratch-resistant coating holds up well. Reviewers highlight its slim 10.8mm profile, hard-coated 39mm steel case with brushed and polished finishes, and a sunray dial with applied markers featuring Super-LumiNova. The La Joux Perret G100 automatic movement is a point of appreciation for its 68-hour power reserve and accuracy reported between ±7 sec/day and losing about 5 seconds per day. Owners also commend its versatile, simple design, comfortable wearability, and the option of an upgraded bracelet, with some finding its overall build and movement comparable to more expensive timepieces. However, some find the polished center links unappealing and the design a bit boring, while others feel the case proportions are stubby with short lugs.

Spinnaker Bradner GMT

The Spinnaker Bradner GMT is praised for its awesome lume and comfortable wearability, with one owner noting the rubber strap is very comfortable and the beads of rice bracelet fits well on smaller wrists. Some find its 15mm thickness and bold colorway may not appeal to everyone, and one owner views it as more of a casual GMT with tool-watch styling than a diver. Overall, owners rate the Spinnaker Bradner GMT highly for its value and comfortable wearability.

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