Side by side
Feynman Timekeepers Feynman OnevsSerket Watch Co Reef Mariana
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
10 of 29 specs differDiameter
Feynman One39mm
Reef Mariana40mm
Power Reserve
Feynman One—
Reef Mariana—
Water Resistance
Feynman One50m
Reef Mariana200m
MSRP
Feynman One$1,045
Reef Mariana$449
Full specifications
Case
4 specsDiameter
39mm
40mm
Thickness
11.5mm
13.2mm
Lug-to-Lug
—
47.5mm
Water Resistance
50m
200m
Crystal & Dial
3 specsCrystal
—
Sapphire
Dial Color
Sweet Orange
Orange
Lume
None
BGW9
Movement
2 specsCaliber
ETA 7001
Seiko NH35
Type
Manual
Automatic
Pricing
1 specsMSRP
$1,045
$449
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