Knot Watches AT1-40SSVvsSeiko Seiko 5 Sports Field series

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Knot Watches AT1-40SSV

Ref. at1-40ssvbk·MSRP $628

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Seiko Seiko 5 Sports Field series

MSRP $315

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Buy from Seiko Used on eBay

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Measurements

Catalog photos are all shot at the same flattering size. These aren't: every case below shares one millimeter scale.

AT1-40SSV

Seiko 5 Sports Field series

Diameter

Across the case, crown excluded.

40mm

39.4mm

Lug-to-Lug

The number that decides fit.

n/a

48.1mm

Thickness

How it sits under a cuff.

11mm

lowest

13.2mm

Water Resistance

Rated in meters.

200m

highest

100m

Power Reserve

How long it runs off the wrist.

42h

highest

41h

MSRP

Sticker price, new.

$628

$315

lowest

Movement

What drives the hands.

Miyota 9015

Seiko 4R36

Spec

AT1-40SSV

Seiko 5 Sports Field series

Case

7 specs

Crystal & Dial

3 specs

Crystal

Sapphire

Hardlex

Crystal Shape

n/a

Curved

Lume

None

LumiBrite on hands and index(es)

Movement

2 specs

Caliber

Miyota 9015

Seiko 4R36

Power Reserve

42h

41h

Pricing

1 specs

MSRP

$628

$315

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Reviews

Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.

Knot Watches AT1-40SSV

Owners widely praise the Knot AT1-40SSV for its versatile 40mm size and excellent wearability, with many appreciating its surprising lightness and the clean dial design. The lume is noted as strong, and accuracy is reported around +4 seconds per day. Some owners find the initial stiffness of the premium strap a minor issue, though its well-machined buckle is well-regarded. One owner flags the small crown as a significant drawback due to its size and placement. On balance, owners rate the Knot AT1-40SSV highly for its comfortable wearability and attractive dial at the price point.

Reddit·4

WatchCrunch·3

WatchUSeek

Seiko 5 Sports Field series

The Seiko 5 Sports Field series is praised for its excellent legibility, featuring fully lumed Arabic numerals and a lumed pearl on the compass bezel. Reviewers note the reliable 4R36 movement and 10 bar water resistance, with some considering the watches good value under 500 euros. The GMT variants, specifically the SSK023 and SSK025, offer an accessible explorer watch with a GMT complication and a fixed 24-hour bezel. Overall, owners and reviewers rate the Seiko 5 Sports Field series highly for its legibility and value proposition.

Monochrome·2