Side by side
Jack Mason Ellum Manual WindvsGruppo Gamma Field III GMT
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
14 of 29 specs differDiameter
Ellum Manual Wind38mm
Field III GMT40mm
Power Reserve
Ellum Manual Wind42h
Field III GMT41h
Water Resistance
Ellum Manual Wind50m
Field III GMT200m
MSRP
Ellum Manual Wind$799
Field III GMT$459
Full specifications
Case
6 specsCategory
—
GMT
Diameter
38mm
40mm
Thickness
9mm
14mm
Lug-to-Lug
45mm
48.5mm
Lug Width
20mm
22mm
Water Resistance
50m
200m
Crystal & Dial
3 specsAR Coating
Inner
Yes
Dial Color
—
Black
Lume
None
Super-LumiNova
Movement
4 specsCaliber
Sellita SW210
Seiko Instruments NH38A
Type
Manual
Automatic
Power Reserve
42h
41h
Complications
None
GMT
Pricing
1 specsMSRP
$799
$459
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