Side by side
Ergon Watches MaelstromvsMaystone Watch Co Prosperity GMT
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
10 of 29 specs differDiameter
Maelstrom40mm
Prosperity GMT38mm
Power Reserve
Maelstrom—
Prosperity GMT41h
Water Resistance
Maelstrom300m
Prosperity GMT100m
MSRP
Maelstrom—
Prosperity GMT$443
Full specifications
Case
5 specsDiameter
40mm
38mm
Thickness
13mm
11.9mm
Lug-to-Lug
—
46mm
Material
Bronze
Stainless Steel
Water Resistance
300m
100m
Crystal & Dial
2 specsDial Color
Gradient Green
Red
Lume
None
string
Movement
2 specsCaliber
Sellita SW-200
Seiko NH34
Power Reserve
—
41h
Pricing
1 specsMSRP
—
—
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