Side by side
Ergon Watches MaelstromvsGruppo Gamma Field III GMT Date
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
13 of 29 specs differDiameter
Maelstrom40mm
Field III GMT Date40mm
Power Reserve
Maelstrom—
Field III GMT Date41h
Water Resistance
Maelstrom300m
Field III GMT Date200m
MSRP
Maelstrom—
Field III GMT Date$459
Full specifications
Case
6 specsCategory
—
GMT
Thickness
13mm
14mm
Lug-to-Lug
—
48.5mm
Lug Width
20mm
22mm
Material
Bronze
Stainless Steel
Water Resistance
300m
200m
Crystal & Dial
3 specsAR Coating
Inner
Yes
Dial Color
Gradient Green
Black
Lume
None
Super-LumiNova
Movement
3 specsCaliber
Sellita SW-200
Seiko Instruments NH38A
Power Reserve
—
41h
Complications
None
GMT, Date
Pricing
1 specsMSRP
—
$459
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