Side by side

Jack Mason Strat-o-timer GMTvsSpinnaker Bradner Pearl Diver

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

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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 Strat-o-timer GMT

Owners widely praise the Jack Mason Strat-o-timer GMT for its impressive fit and finish, excellent value, and true traveler GMT complication, especially considering its price point. Reviewers and owners alike highlight the comfortable 40mm tonneau case, sapphire crystal bezel, and retro styling. Some owners note the hour markers are "chubby" but do not affect legibility, and the strap ends are slightly large. One owner describes the 7-link bracelet as rivaling luxury brands. On balance, owners and reviewers rate the Jack Mason Strat-o-timer GMT highly for its build quality and value proposition.

From video reviewers

The Miyota 9075 true GMT movement is a consistent strength. Reviewers noted the exceptional lightness and comfort due to Grade 2 titanium construction. Opinions on whether further refinements are needed were not shared.

Spinnaker Bradner Pearl Diver

The Spinnaker Bradner Pearl Diver is noted by owners as large on smaller wrists, with a 50mm lug-to-lug and 15mm height being a concern, though some find it acceptable with specific strap choices. Opinions on finishing quality vary, with one owner reporting issues like a poorly seated bezel and crooked indices. Overall, owners rate the Spinnaker Bradner Pearl Diver with mixed reviews regarding its size and finishing.

At a glance

11 of 29 specs differ
Diameter
Strat-o-timer GMT40mm
Bradner Pearl Diver42mm
Power Reserve
Strat-o-timer GMT42h
Bradner Pearl Diver
Water Resistance
Strat-o-timer GMT200m
Bradner Pearl Diver180m
MSRP
Strat-o-timer GMT$1,099
Bradner Pearl Diver$370

Full specifications

Case

7 specs
Category
Diver
Diameter
40mm
42mm
Thickness
13.2mm
15mm
Lug-to-Lug
47mm
50mm
Lug Width
20mm
22mm
Material
Stainless Steel
316L Stainless Steel
Water Resistance
200m
180m

Crystal & Dial

1 specs
Dial Color
Emerald

Movement

2 specs
Caliber
Miyota 9075
Seiko NH35
Power Reserve
42h
0h

Pricing

1 specs
MSRP
$1,099
$370
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