Which is cheaper, the Casio EFB-730D or the Undone x Simple Union: Urushi Automatic?

At MSRP the Casio EFB-730D is the cheaper of the two at $165, against $445 for the Undone x Simple Union: Urushi Automatic — a $280 gap before any retailer discounting.

Which is bigger, the Casio EFB-730D or the Undone x Simple Union: Urushi Automatic?

The Casio EFB-730D wears larger at 40mm versus 37mm for the Undone x Simple Union: Urushi Automatic — a 3mm difference across the dial.

Which has better water resistance, the Casio EFB-730D or the Undone x Simple Union: Urushi Automatic?

The Casio EFB-730D is rated to 100m versus 50m for the Undone x Simple Union: Urushi Automatic.

What movement does the Casio EFB-730D run compared to the Undone x Simple Union: Urushi Automatic?

The Casio EFB-730D runs a quartz caliber, while the Undone x Simple Union: Urushi Automatic runs a automatic (Seiko NH35).

Side by side

Casio EFB-730DvsUndone x Simple Union: Urushi Automatic

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

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Casio EFB-730D

EFB-730D

MSRP $165

See the full EFB-730D

Undone x Simple Union: Urushi Automatic

MSRP $445

See the full x Simple Union: Urushi Automatic

At a glance

14 of 29 specs differ

Diameter

EFB-730D40mm

x Simple Union: Urushi Automatic37mm

Power Reserve

EFB-730D—

x Simple Union: Urushi Automatic—

Water Resistance

EFB-730D100m

x Simple Union: Urushi Automatic50m

MSRP

EFB-730D$165

x Simple Union: Urushi Automatic$445

Full specifications

Case

8 specs

Crystal & Dial

3 specs

Crystal

Sapphire

—

AR Coating

—

Dial Color

Black

—

Movement

2 specs

Caliber

—

Seiko NH35

Type

Quartz

Automatic

Pricing

1 specs

MSRP

$165

$445

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Casio EFB-730DvsUndone x Simple Union: Urushi Automatic

At a glance

Full specifications

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