Which is cheaper, the Ollech & Wajs Chronograph or the Seiko Prospex Sea?

At MSRP the Seiko Prospex Sea is the cheaper of the two at $1,100, against $2,496 for the Ollech & Wajs Chronograph — a $1,396 gap before any retailer discounting.

Which is bigger, the Ollech & Wajs Chronograph or the Seiko Prospex Sea?

The Seiko Prospex Sea wears larger at 41.3mm versus 39.5mm for the Ollech & Wajs Chronograph — a 1.8mm difference across the dial.

Which has better water resistance, the Ollech & Wajs Chronograph or the Seiko Prospex Sea?

The Ollech & Wajs Chronograph is rated to 500m versus 300m for the Seiko Prospex Sea.

Which has a longer power reserve, the Ollech & Wajs Chronograph or the Seiko Prospex Sea?

The Seiko Prospex Sea carries a 72-hour power reserve against 54 hours on the Ollech & Wajs Chronograph.

What movement does the Ollech & Wajs Chronograph run compared to the Seiko Prospex Sea?

Both watches run automatic movements — the Ollech & Wajs Chronograph uses the Valjoux 7753 and the Seiko Prospex Sea uses the Seiko 6R55.

Side by side

Ollech & Wajs ChronographvsSeiko Prospex Sea

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

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Ollech & Wajs Chronograph

ow-navichron-4

MSRP $2,496

See the full Chronograph

Seiko Prospex Sea

MSRP $1,100

See the full Prospex Sea

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At a glance

11 of 29 specs differ

Diameter

Chronograph39.5mm

Prospex Sea41.3mm

Power Reserve

Chronograph54h

Prospex Sea72h

Water Resistance

Chronograph500m

Prospex Sea300m

MSRP

Chronograph$2,496

Prospex Sea$1,100

Full specifications

Case

5 specs

Crystal & Dial

2 specs

AR Coating

—

Anti-reflective coating on inner surface

Lume

None

LumiBrite on hands, index(es) and bezel

Movement

3 specs

Caliber

Valjoux 7753

Seiko 6R55

Power Reserve

54h

72h

Jewels

Pricing

1 specs

MSRP

$2,496

$1,100

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Ollech & Wajs ChronographvsSeiko Prospex Sea

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