Which is cheaper, the Praesidus A-11 Phantom or the Seestern S450 Ocean Star?

At MSRP the Seestern S450 Ocean Star is the cheaper of the two at $299, against $300 for the Praesidus A-11 Phantom — a $1 gap before any retailer discounting.

Which is bigger, the Praesidus A-11 Phantom or the Seestern S450 Ocean Star?

The Seestern S450 Ocean Star wears larger at 40mm versus 38mm for the Praesidus A-11 Phantom — a 2mm difference across the dial.

Which has a longer power reserve, the Praesidus A-11 Phantom or the Seestern S450 Ocean Star?

The Seestern S450 Ocean Star carries a 41-hour power reserve against 40 hours on the Praesidus A-11 Phantom.

What movement does the Praesidus A-11 Phantom run compared to the Seestern S450 Ocean Star?

Both watches run automatic movements — the Praesidus A-11 Phantom uses the Seiko NH35 and the Seestern S450 Ocean Star uses the TMI NH35A.

Side by side

Praesidus A-11 PhantomvsSeestern S450 Ocean Star

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

Add a watch

Praesidus A-11 Phantom

P-38-PH-MB-SDCSG

MSRP $300

Seestern S450 Ocean Star

S450.WS

MSRP $299

At a glance

13 of 29 specs differ

Diameter

A-11 Phantom38mm

S450 Ocean Star40mm

Power Reserve

A-11 Phantom40h

S450 Ocean Star41h

Water Resistance

A-11 Phantom100m

S450 Ocean Star100m

MSRP

A-11 Phantom$300

S450 Ocean Star$299

Full specifications

Case

5 specs

Crystal & Dial

2 specs

Dial Color

Phantom

White

Lume

None

Tritium

Movement

5 specs

Caliber

Seiko NH35

TMI NH35A

Beat Rate

28,800 vph

21,600 vph

Power Reserve

40h

41h

Jewels

Complications

None

GMT, Date

Pricing

1 specs

MSRP

$300

$299

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