Which is cheaper, the Naga Watches Opera or the Undone Ronin Automatic?

At MSRP the Undone Ronin Automatic is the cheaper of the two at $380, against $917 for the Naga Watches Opera — a $537 gap before any retailer discounting.

Which is bigger, the Naga Watches Opera or the Undone Ronin Automatic?

The Undone Ronin Automatic wears larger at 40mm versus 39mm for the Naga Watches Opera — a 1mm difference across the dial.

What movement does the Naga Watches Opera run compared to the Undone Ronin Automatic?

Both watches run automatic movements — the Naga Watches Opera uses the Miyota 9039 and the Undone Ronin Automatic uses the Seiko NH35.

Side by side

Naga Watches OperavsUndone Ronin Automatic

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

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Naga Watches Opera

MSRP $917

See the full Opera

Undone Ronin Automatic

MSRP $380

See the full Ronin Automatic

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At a glance

8 of 29 specs differ

Diameter

Opera39mm

Ronin Automatic40mm

Power Reserve

Opera—

Ronin Automatic—

Water Resistance

Opera100m

Ronin Automatic100m

MSRP

Opera$917

Ronin Automatic$380

Full specifications

Case

4 specs

Diameter

39mm

40mm

Thickness

10mm

0mm

Lug-to-Lug

—

0mm

Lug Width

—

0mm

Crystal & Dial

2 specs

Crystal

Sapphire

—

Dial Color

Lapislazuli

—

Movement

1 specs

Caliber

Miyota 9039

Seiko NH35

Pricing

1 specs

MSRP

$917

$380

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