Helgray Silverstone (Refurbished)vsUndone 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.

Silverstone (Refurbished)

Sport Speedy
Diameter
40mm
40mm
Lug-to-Lug
47mm
n/a
Thickness
11.5mm
n/a
Water Resistance
50m
highest
30m
MSRP
$150
lowest
$285
Movement
Seiko VK64
Seiko VK64
Case
4 specsCrystal & Dial
2 specsMovement
1 specsPricing
1 specsReviews
Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.
Owners widely praise the Helgray Silverstone (Refurbished) for its attractive aesthetic, crisp printing, applied indices, legible date wheel, and solid pushers, noting amazing fit and finish for the price point. Some owners find the case feels insubstantial or light, with downward-angled lugs that can dig into the wrist, and a crystal with noticeable edge effects. The 24-hour subdial is also noted as less desirable than sub seconds by some. Overall, owners rate the Helgray Silverstone (Refurbished) highly for its aesthetic appeal and impressive build quality at its price.
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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