Side by side

Aera Instruments M-1vsFeynman Timekeepers Feynman One

The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.

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M-1
Aera InstrumentsM-1
Feynman One
Feynman TimekeepersFeynman One
MSRP $1,045
Buy from Aera Instruments ↗
Buy used on eBay ↗
Buy from Feynman Timekeepers ↗
Buy used on eBay ↗

At a glance

9 of 29 specs differ
Diameter
M-139mm
Feynman One39mm
Power Reserve
M-142h
Feynman One—
Water Resistance
M-1100m
Feynman One50m
MSRP
M-1—
Feynman One$1,045

Full specifications

Case

3 specs
Thickness
13.14mm
11.5mm
Lug-to-Lug
47.6mm
—
Water Resistance
100m
50m

Crystal & Dial

3 specs
Crystal
Sapphire
—
Dial Color
Dune
Sweet Orange
Lume
Super-LumiNova
None

Movement

2 specs
Caliber
Sellita SW216-1
ETA 7001
Power Reserve
42h
—

Pricing

1 specs
MSRP
—
$1,045
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