Knot Watches AT1-40SSVvsSeiko Prospex Sea Seiko Diver’s Watch 60th Anniversary Limited Edition

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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

Prospex Sea Seiko Diver’s Watch 60th Anniversary Limited Edition
Diameter
40mm
40mm
Lug-to-Lug
n/a
46.4mm
Thickness
11mm
lowest
13mm
Water Resistance
200m
300m
highest
Power Reserve
42h
72h
highest
MSRP
$869
lowest
$1,400
Movement
Miyota 9015
Seiko 6R55
Case
4 specsCrystal & Dial
4 specsMovement
3 specsPricing
1 specsReviews
Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.
Owners widely praise the Knot Watches AT1-40SSV for its solid build quality, clean aesthetic, and good finish, with the small seconds hand accurately hitting its markers. The 40mm case size is generally considered good, though one owner felt it wore "a tad on the small side." Opinions on the included straps are divided, with some appreciating their unique Japanese fabrics and leathers and finding them soft and ready-to-wear, while others express disappointment with their quality and note they can be stiff initially. One owner also flagged the small crown as a nitpick due to its low placement. Overall, owners rate the Knot Watches AT1-40SSV highly for its overall quality and finish at the price point.
The Seiko Prospex Sea Seiko Diver’s Watch 60th Anniversary Limited Edition is praised for its comfortable MarineMaster case design and attractive wave-patterned silvery-white dial with a grey bezel insert. Owners note the 40mm case and 300m water resistance. Some owners criticize the 6R55 movement's accuracy, reporting deviations of +25/-15 seconds per day, and find the watch expensive for a limited edition with a large production run. Overall, owners find the Seiko Prospex Sea Seiko Diver’s Watch 60th Anniversary Limited Edition a comfortable and attractive watch, though some question its value proposition due to accuracy concerns and its "limited" status.
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