Which is cheaper, the CWC Automatic Divers Watch Mk.2 Black with Date or the Seestern S450 Ocean Star?

At MSRP the Seestern S450 Ocean Star is the cheaper of the two at $299, against $1,249 for the CWC Automatic Divers Watch Mk.2 Black with Date — a $950 gap before any retailer discounting.

Which is bigger, the CWC Automatic Divers Watch Mk.2 Black with Date or the Seestern S450 Ocean Star?

The CWC Automatic Divers Watch Mk.2 Black with Date wears larger at 41mm versus 40mm for the Seestern S450 Ocean Star — a 1mm difference across the dial.

Which has better water resistance, the CWC Automatic Divers Watch Mk.2 Black with Date or the Seestern S450 Ocean Star?

The CWC Automatic Divers Watch Mk.2 Black with Date is rated to 300m versus 100m for the Seestern S450 Ocean Star.

Which has a longer power reserve, the CWC Automatic Divers Watch Mk.2 Black with Date or the Seestern S450 Ocean Star?

The Seestern S450 Ocean Star carries a 41-hour power reserve against 40 hours on the CWC Automatic Divers Watch Mk.2 Black with Date.

What movement does the CWC Automatic Divers Watch Mk.2 Black with Date run compared to the Seestern S450 Ocean Star?

Both watches run automatic movements — the CWC Automatic Divers Watch Mk.2 Black with Date uses the Sellita SW200-1 and the Seestern S450 Ocean Star uses the TMI NH35A.

Side by side

CWC Automatic Divers Watch Mk.2 Black with DatevsSeestern S450 Ocean Star

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

CWC Automatic Divers Watch Mk.2 Black with Date

cwc-royal-navy-black-diver-automatic-mk-2-with-date

MSRP $1,249

Seestern S450 Ocean Star

S450.WS

MSRP $299

At a glance

12 of 29 specs differ

Diameter

Automatic Divers Watch Mk.2 Black with Date41mm

S450 Ocean Star40mm

Power Reserve

Automatic Divers Watch Mk.2 Black with Date40h

S450 Ocean Star41h

Water Resistance

Automatic Divers Watch Mk.2 Black with Date300m

S450 Ocean Star100m

MSRP

Automatic Divers Watch Mk.2 Black with Date$1,249

S450 Ocean Star$299

Full specifications

Case

4 specs

Diameter

41mm

40mm

Lug-to-Lug

47mm

48mm

Material

Stainless Steel

316L Stainless Steel

Water Resistance

300m

100m

Crystal & Dial

2 specs

Dial Color

CWC Automatic Divers Watch Mk.2 Black with Date (SF300 AS120-D)

White

Lume

Super-LumiNova

Tritium

Movement

5 specs

Caliber

Sellita SW200-1

TMI NH35A

Beat Rate

28,800 vph

21,600 vph

Power Reserve

40h

41h

Jewels

Complications

None

GMT, Date

Pricing

1 specs

MSRP

$1,249

$299

Follow this matchup

Get a note when CWC Automatic Divers Watch Mk.2 Black with Date vs Seestern S450 Ocean Star gets more votes, a community discussion, or a price drop. No account needed.

Keep exploring