Side by side
Borealis Watch Co. JamantavsSpinnaker Bradner GMT
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
11 of 29 specs differDiameter
Jamanta42.50mm
Bradner GMT42mm
Power Reserve
Jamanta40h
Bradner GMT40h
Water Resistance
Jamanta300m
Bradner GMT180m
MSRP
Jamanta$415
Bradner GMT$299
Full specifications
Case
7 specsCategory
Diver
GMT
Diameter
42.50mm
42mm
Thickness
13.30mm
15mm
Lug-to-Lug
50.40mm
50mm
Lug Width
22mm
22mm
Material
Stainless Steel
316L Stainless Steel
Water Resistance
300m
180m
Crystal & Dial
2 specsDial Color
Black
Brown
Lume
BGW9
None
Movement
1 specsCaliber
Miyota 9015
Seiko NH34A
Pricing
1 specsMSRP
$415
$299
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