Which is cheaper, the Core Timepieces The River Watch or the Seiko Prospex Sea?

At MSRP the Core Timepieces The River Watch is the cheaper of the two at $540, against $1,500 for the Seiko Prospex Sea — a $960 gap before any retailer discounting.

Which is bigger, the Core Timepieces The River Watch or the Seiko Prospex Sea?

The Seiko Prospex Sea wears larger at 43.5mm versus 42mm for the Core Timepieces The River Watch — a 1.5mm difference across the dial.

Which has better water resistance, the Core Timepieces The River Watch or the Seiko Prospex Sea?

The Core Timepieces The River Watch is rated to 300m versus 200m for the Seiko Prospex Sea.

What movement does the Core Timepieces The River Watch run compared to the Seiko Prospex Sea?

Both watches run automatic movements — the Core Timepieces The River Watch uses the Seiko NH34A and the Seiko Prospex Sea uses the 6R35.

Side by side

Core Timepieces The River WatchvsSeiko Prospex Sea

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

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Core Timepieces The River Watch

MSRP $540

Seiko Prospex Sea

spb349j1

MSRP $1,500

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At a glance

13 of 29 specs differ

Diameter

The River Watch42mm

Prospex Sea43.5mm

Power Reserve

The River Watch—

Prospex Sea70h

Water Resistance

The River Watch300m

Prospex Sea200m

MSRP

The River Watch$540

Prospex Sea$1,500

Full specifications

Case

6 specs

Crystal & Dial

3 specs

AR Coating

Inner

Anti-reflective coating on inner surface

Dial Color

—

Black

Lume

None

LumiBrite on hands and index(es)

Movement

3 specs

Caliber

Seiko NH34A

6R35

Power Reserve

—

70h

Jewels

Pricing

1 specs

MSRP

—

$1,500

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Core Timepieces The River WatchvsSeiko Prospex Sea

At a glance

Full specifications

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