Addiesdive VK63/0S20 Triple-Register ChronographvsUndone Sport Speedy
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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.

VK63/0S20 Triple-Register Chronograph

Sport Speedy
Diameter
37mm
40mm
Lug-to-Lug
46mm
n/a
Thickness
12.7mm
n/a
Water Resistance
100m
highest
30m
MSRP
$89
lowest
$285
Movement
Seiko VK63
Seiko VK64
Case
5 specsCrystal & Dial
1 specsMovement
2 specsPricing
1 specsReviews
Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.
Owners widely praise the Addiesdive 37mm VK63/0S20 Triple-Register Chronograph Watch AD2517/AD2543 for its surprising quality and finishing, with a bracelet that rivals Seiko 5 series watches and bright, durable BGW9 lume. Reviewers highlight the value proposition, citing the sapphire crystal, solid endlinks, milled clasp, and 100m water resistance for around $59, along with the dial's depth and texture. Some owners report the VK63 chronograph seconds hand can become misaligned, and one noted a misaligned bezel insert requiring reattachment, though others find the movement reliable and the watch comfortable and wearable. Overall, owners and reviewers rate the Addiesdive 37mm VK63/0S20 Triple-Register Chronograph Watch AD2517/AD2543 highly for its exceptional value and surprising build quality at its price point.
Owners praise the Undone Sport Speedy's vintage chronograph aesthetic and the accuracy of its meca-quartz movement. Reviewers highlight the extensive customization options and value at $315. One owner finds the leather strap stiff and the display case back on a quartz watch unnecessary. Another reviewer notes the meca-quartz VK64 movement's pusher feel and hand reset are mechanical-like, though the movement itself is undecorated. On balance, owners and reviewers rate the Undone Sport Speedy highly for its vintage styling and customization potential at its price point.
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