Side by side
Feynman Timekeepers Feynman OnevsGruppo Gamma Field III GMT Date
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
15 of 29 specs differDiameter
Feynman One39mm
Field III GMT Date40mm
Power Reserve
Feynman One—
Field III GMT Date41h
Water Resistance
Feynman One50m
Field III GMT Date200m
MSRP
Feynman One$1,045
Field III GMT Date$459
Full specifications
Case
6 specsCategory
—
GMT
Diameter
39mm
40mm
Thickness
11.5mm
14mm
Lug-to-Lug
—
48.5mm
Lug Width
20mm
22mm
Water Resistance
50m
200m
Crystal & Dial
4 specsCrystal
—
Sapphire
AR Coating
Inner
Yes
Dial Color
Sweet Orange
Black
Lume
None
Super-LumiNova
Movement
4 specsCaliber
ETA 7001
Seiko Instruments NH38A
Type
Manual
Automatic
Power Reserve
—
41h
Complications
None
GMT, Date
Pricing
1 specsMSRP
$1,045
$459
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