Which is cheaper, the Feynman Timekeepers Feynman One or the Undone Ronin Automatic?

At MSRP the Undone Ronin Automatic is the cheaper of the two at $380, against $1,045 for the Feynman Timekeepers Feynman One — a $665 gap before any retailer discounting.

Which is bigger, the Feynman Timekeepers Feynman One or the Undone Ronin Automatic?

The Undone Ronin Automatic wears larger at 40mm versus 39mm for the Feynman Timekeepers Feynman One — a 1mm difference across the dial.

Which has better water resistance, the Feynman Timekeepers Feynman One or the Undone Ronin Automatic?

The Undone Ronin Automatic is rated to 100m versus 50m for the Feynman Timekeepers Feynman One.

What movement does the Feynman Timekeepers Feynman One run compared to the Undone Ronin Automatic?

The Feynman Timekeepers Feynman One runs a manual caliber (ETA/Peseux 7001), while the Undone Ronin Automatic runs a automatic (Seiko NH35).

Side by side

Feynman Timekeepers Feynman OnevsUndone Ronin Automatic

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

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Feynman Timekeepers Feynman One

MSRP $1,045

See the full Feynman One

Undone Ronin Automatic

MSRP $380

See the full Ronin Automatic

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At a glance

10 of 29 specs differ

Diameter

Feynman One39mm

Ronin Automatic40mm

Power Reserve

Feynman One—

Ronin Automatic—

Water Resistance

Feynman One50m

Ronin Automatic100m

MSRP

Feynman One$1,045

Ronin Automatic$380

Full specifications

Case

5 specs

Diameter

39mm

40mm

Thickness

11.5mm

0mm

Lug-to-Lug

—

0mm

Lug Width

20mm

0mm

Water Resistance

50m

100m

Crystal & Dial

2 specs

Crystal

—

Dial Color

Sweet Orange

—

Movement

2 specs

Caliber

ETA/Peseux 7001

Seiko NH35

Type

Manual

Automatic

Pricing

1 specs

MSRP

$1,045

$380

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