Side by side
Borealis Watch Co. Caloura 300mvsMaystone Watch Co Prosperity 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
Caloura 300m42mm
Prosperity GMT38mm
Power Reserve
Caloura 300m40h
Prosperity GMT41h
Water Resistance
Caloura 300m300m
Prosperity GMT100m
MSRP
Caloura 300m$275
Prosperity GMT$443
Full specifications
Case
6 specsCategory
Diver
—
Diameter
42mm
38mm
Thickness
13.9mm
11.9mm
Lug-to-Lug
44.20mm
46mm
Lug Width
22mm
20mm
Water Resistance
300m
100m
Crystal & Dial
2 specsDial Color
Black
Red
Lume
BGW9
string
Movement
2 specsCaliber
NH35
Seiko NH34
Power Reserve
40h
41h
Pricing
1 specsMSRP
$275
—
More watches worth a look
Matched to the watches above on size, movement, style and price — microbrands first. Open any one to dig in.
Follow this matchup
Get a note when Borealis Watch Co. Caloura 300m vs Maystone Watch Co Prosperity GMT gets more votes, a community discussion, or a price drop. No account needed.
People also compared
Comparisons nearby in the catalog — alternatives to the watches above paired against the matchup.
Boldr MarinevsMaystone Watch Co Prosperity GMTMaystone Watch Co Prosperity GMTvsBoldr Odyssey FreediverChristopher Ward C60 LympstonevsMaystone Watch Co Prosperity GMTMaystone Watch Co Prosperity GMTvsSpinnaker Tesei TitaniumBorealis Watch Co. Caloura 300mvsSerket Watch Co Blackpool GMTBorealis Watch Co. Caloura 300mvsUgly Watch Co 100m GMT Sport Diver