Which is cheaper, the Knot Watches Knot AT1-40SSV or the Seiko Prospex Sea?

At MSRP the Knot Watches Knot AT1-40SSV is the cheaper of the two at $628, against $1,100 for the Seiko Prospex Sea — a $472 gap before any retailer discounting.

Which is bigger, the Knot Watches Knot AT1-40SSV or the Seiko Prospex Sea?

The Seiko Prospex Sea wears larger at 41.3mm versus 40mm for the Knot Watches Knot AT1-40SSV — a 1.3mm difference across the dial.

Which has better water resistance, the Knot Watches Knot AT1-40SSV or the Seiko Prospex Sea?

The Seiko Prospex Sea is rated to 300m versus 200m for the Knot Watches Knot AT1-40SSV.

Which has a longer power reserve, the Knot Watches Knot AT1-40SSV or the Seiko Prospex Sea?

The Seiko Prospex Sea carries a 72-hour power reserve against 42 hours on the Knot Watches Knot AT1-40SSV.

What movement does the Knot Watches Knot AT1-40SSV run compared to the Seiko Prospex Sea?

Both watches run automatic movements — the Knot Watches Knot AT1-40SSV uses the Miyota 9015 and the Seiko Prospex Sea uses the Seiko 6R55.

Side by side

Knot Watches Knot AT1-40SSVvsSeiko Prospex Sea

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

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Knot Watches Knot AT1-40SSV

at1-40ssvbk

MSRP $628

See the full Knot AT1-40SSV

Seiko Prospex Sea

MSRP $1,100

See the full Prospex Sea

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At a glance

13 of 29 specs differ

Diameter

Knot AT1-40SSV40mm

Prospex Sea41.3mm

Power Reserve

Knot AT1-40SSV42h

Prospex Sea72h

Water Resistance

Knot AT1-40SSV200m

Prospex Sea300m

MSRP

Knot AT1-40SSV$628

Prospex Sea$1,100

Full specifications

Case

7 specs

Crystal & Dial

3 specs

AR Coating

—

Anti-reflective coating on inner surface

Dial Color

Black

—

Lume

None

LumiBrite on hands, index(es) and bezel

Movement

2 specs

Caliber

Miyota 9015

Seiko 6R55

Power Reserve

42h

72h

Pricing

1 specs

MSRP

$628

$1,100

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Knot Watches Knot AT1-40SSVvsSeiko Prospex Sea

At a glance

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