Spinnaker Bradner AutomaticvsMaystone Watch Co Prosperity GMT
The measurements
Sized up.
Catalogue photos are all shot at the same flattering size. These aren't: every case below shares one millimetre scale.

Bradner Automatic

Prosperity GMT
Diameter
42mm
38mm
Lug-to-Lug
50mm
46mm
lowest
Thickness
15mm
11.9mm
lowest
Water Resistance
180m
highest
100m
Power Reserve
n/a
41h
MSRP
$420
lowest
$443
Movement
Miyota 8215
Seiko NH34
Case
7 specsCategory
Diver
GMT
Diameter
42mm
38mm
Thickness
15mm
11.9mm
Lug-to-Lug
50mm
46mm
Lug Width
22mm
20mm
Material
316L Stainless Steel
Stainless Steel
Water Resistance
180m
100m
Crystal & Dial
2 specsDial Color
Black
Red
Lume
None
string
Movement
2 specsCaliber
Miyota 8215
Seiko NH34
Power Reserve
0h
41h
Pricing
1 specsMSRP
$420
$443
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