Which is cheaper, the CWC Quartz Divers Watch Mk.2 Polished Case or the Seiko Prospex Sea The Black Series?

At MSRP the CWC Quartz Divers Watch Mk.2 Polished Case is the cheaper of the two at $583, against $765 for the Seiko Prospex Sea The Black Series — a $183 gap before any retailer discounting.

Which is bigger, the CWC Quartz Divers Watch Mk.2 Polished Case or the Seiko Prospex Sea The Black Series?

The Seiko Prospex Sea The Black Series wears larger at 45mm versus 41mm for the CWC Quartz Divers Watch Mk.2 Polished Case — a 4mm difference across the dial.

Which has better water resistance, the CWC Quartz Divers Watch Mk.2 Polished Case or the Seiko Prospex Sea The Black Series?

The CWC Quartz Divers Watch Mk.2 Polished Case is rated to 300m versus 200m for the Seiko Prospex Sea The Black Series.

Which has a longer power reserve, the CWC Quartz Divers Watch Mk.2 Polished Case or the Seiko Prospex Sea The Black Series?

The Seiko Prospex Sea The Black Series carries a 41-hour power reserve against 40 hours on the CWC Quartz Divers Watch Mk.2 Polished Case.

What movement does the CWC Quartz Divers Watch Mk.2 Polished Case run compared to the Seiko Prospex Sea The Black Series?

The CWC Quartz Divers Watch Mk.2 Polished Case runs a quartz caliber (Ronda 517), while the Seiko Prospex Sea The Black Series runs a automatic (4R36).

Side by side

CWC Quartz Divers Watch Mk.2 Polished CasevsSeiko Prospex Sea The Black Series

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

CWC Quartz Divers Watch Mk.2 Polished Case

cwc-royal-navy-divers-quartz-watch-mk-2

MSRP $583

Seiko Prospex Sea The Black Series

srpk43

MSRP $765

At a glance

13 of 29 specs differ

Diameter

Quartz Divers Watch Mk.2 Polished Case41mm

Prospex Sea The Black Series45mm

Power Reserve

Quartz Divers Watch Mk.2 Polished Case40h

Prospex Sea The Black Series41h

Water Resistance

Quartz Divers Watch Mk.2 Polished Case300m

Prospex Sea The Black Series200m

MSRP

Quartz Divers Watch Mk.2 Polished Case$583

Prospex Sea The Black Series$765

Full specifications

Case

5 specs

Diameter

41mm

45mm

Thickness

12mm

13.2mm

Lug-to-Lug

47mm

47.7mm

Lug Width

20mm

22mm

Water Resistance

300m

200m

Crystal & Dial

3 specs

AR Coating

Inner

Anti-reflective coating on inner surface

Dial Color

CWC Quartz Divers Watch Mk.2 Polished Case (RN300-P QS120)

Black

Lume

Super-LumiNova

LumiBrite on hands, index(es) and bezel

Movement

4 specs

Caliber

Ronda 517

4R36

Type

Quartz

Automatic

Power Reserve

40h

41h

Jewels

Pricing

1 specs

MSRP

$583

$765

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