Which is cheaper, the Omnis ERA or the Seiko 5KX?

At MSRP the Seiko 5KX is the cheaper of the two at $350, against $583 for the Omnis ERA — a $233 gap before any retailer discounting.

Which is bigger, the Omnis ERA or the Seiko 5KX?

The Seiko 5KX wears larger at 42.5mm versus 41.5mm for the Omnis ERA — a 1mm difference across the dial.

Which has better water resistance, the Omnis ERA or the Seiko 5KX?

The Omnis ERA is rated to 50m versus 10m for the Seiko 5KX.

Which has a longer power reserve, the Omnis ERA or the Seiko 5KX?

The Omnis ERA carries a 48-hour power reserve against 41 hours on the Seiko 5KX.

What movement does the Omnis ERA run compared to the Seiko 5KX?

Both watches run automatic movements — the Omnis ERA uses the Miyota 8215 and the Seiko 5KX uses the Seiko 4R36.

Side by side

Omnis ERAvsSeiko 5KX

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

MSRP $583

MSRP $350

At a glance

13 of 29 specs differ

Diameter

ERA41.5mm

5KX42.5mm

Power Reserve

ERA48h

5KX41h

Water Resistance

ERA50m

5KX100m

MSRP

ERA$583

5KX$350

Full specifications

Case

6 specs

Crystal & Dial

3 specs

Crystal

Sapphire

Hardlex

Dial Color

Meteorite

—

Lume

None

LumiBrite on hands and index(es)

Movement

3 specs

Caliber

Miyota 8215

Seiko 4R36

Power Reserve

48h

41h

Jewels

Pricing

1 specs

MSRP

$583

$350

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Omnis ERAvsSeiko 5KX

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