Side by side

Spinnaker Bradner GMTvsTissot Gentleman Open Heart

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

Bradner GMT
SpinnakerBradner GMT
MSRP $299
Gentleman Open Heart
TissotGentleman Open Heart
MSRP $1,025

At a glance

15 of 29 specs differ
Diameter
Bradner GMT42mm
Gentleman Open Heart40mm
Power Reserve
Bradner GMT40h
Gentleman Open Heart80h
Water Resistance
Bradner GMT180m
Gentleman Open Heart100m
MSRP
Bradner GMT$299
Gentleman Open Heart$1,025

Full specifications

Case

7 specs
Category
GMT
Chronograph
Diameter
42mm
40mm
Thickness
15mm
11.5mm
Lug-to-Lug
50mm
40mm
Lug Width
22mm
21mm
Material
316L Stainless Steel
Stainless Steel
Water Resistance
180m
100m

Crystal & Dial

5 specs
Crystal Shape
Flat
Domed
AR Coating
Inner
Yes
Dial Color
Brown
Silver
Indices
Applied
Indexes
Lume
None
Super-LumiNova ®

Movement

2 specs
Caliber
Seiko NH34A
Power Reserve
40h
80h

Pricing

1 specs
MSRP
$299
$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.

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.

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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