Which is cheaper, the Seiko Prospex Sea or the Yema Radiance?

At MSRP the Yema Radiance is the cheaper of the two at $279, against $1,100 for the Seiko Prospex Sea — a $821 gap before any retailer discounting.

Which is bigger, the Seiko Prospex Sea or the Yema Radiance?

The Seiko Prospex Sea wears larger at 41.3mm versus 30mm for the Yema Radiance — a 11.3mm difference across the dial.

Which has better water resistance, the Seiko Prospex Sea or the Yema Radiance?

The Seiko Prospex Sea is rated to 300m versus 30m for the Yema Radiance.

Which has a longer power reserve, the Seiko Prospex Sea or the Yema Radiance?

The Seiko Prospex Sea carries a 72-hour power reserve against 40 hours on the Yema Radiance.

What movement does the Seiko Prospex Sea run compared to the Yema Radiance?

The Seiko Prospex Sea runs a automatic caliber (6R55), while the Yema Radiance runs a quartz.

Side by side

Seiko Prospex SeavsYema Radiance

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

Seiko Prospex Sea

spb481j1

MSRP $1,100

Yema Radiance

yema-radiance-ymhf1586-am

MSRP $279

At a glance

14 of 29 specs differ

Diameter

Prospex Sea41.3mm

Radiance30mm

Power Reserve

Prospex Sea72h

Radiance40h

Water Resistance

Prospex Sea300m

Radiance30m

MSRP

Prospex Sea$1,100

Radiance$279

Full specifications

Case

7 specs

Crystal & Dial

2 specs

AR Coating

Anti-reflective coating on inner surface

Inner

Lume

LumiBrite on hands, index(es) and bezel

None

Movement

4 specs

Caliber

6R55

—

Type

Automatic

Quartz

Power Reserve

72h

40h

Jewels

Pricing

1 specs

MSRP

$1,100

$279

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Seiko Prospex SeavsYema Radiance

At a glance

Full specifications

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