Which is cheaper, the Omnis ERA or the Undone Ronin Automatic?

At MSRP the Undone Ronin Automatic is the cheaper of the two at $380, against $583 for the Omnis ERA — a $203 gap before any retailer discounting.

Which is bigger, the Omnis ERA or the Undone Ronin Automatic?

The Omnis ERA wears larger at 41.5mm versus 40mm for the Undone Ronin Automatic — a 1.5mm difference across the dial.

Which has better water resistance, the Omnis ERA or the Undone Ronin Automatic?

The Undone Ronin Automatic is rated to 100m versus 50m for the Omnis ERA.

What movement does the Omnis ERA run compared to the Undone Ronin Automatic?

Both watches run automatic movements — the Omnis ERA uses the Miyota 8215 and the Undone Ronin Automatic uses the Seiko NH35.

Side by side

Omnis ERAvsUndone Ronin Automatic

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

Add a watch

Omnis ERA

MSRP $583

See the full ERA

Undone Ronin Automatic

MSRP $380

See the full Ronin Automatic

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At a glance

10 of 29 specs differ

Diameter

ERA41.5mm

Ronin Automatic40mm

Power Reserve

ERA48h

Ronin Automatic—

Water Resistance

ERA50m

Ronin Automatic100m

MSRP

ERA$583

Ronin Automatic$380

Full specifications

Case

5 specs

Diameter

41.5mm

40mm

Thickness

12mm

0mm

Lug-to-Lug

—

0mm

Lug Width

20mm

0mm

Water Resistance

50m

100m

Crystal & Dial

2 specs

Crystal

Sapphire

—

Dial Color

Meteorite

—

Movement

2 specs

Caliber

Miyota 8215

Seiko NH35

Power Reserve

48h

—

Pricing

1 specs

MSRP

$583

$380

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