Side by side

Helgray Silverstone (Refurbished)vsSeiko Prospex SPEEDTIMER Mechanical Chronograph

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

What people say

Owners + reviewers, side by side

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

Helgray Silverstone (Refurbished)

Owners widely praise the Helgray Silverstone (Refurbished) for its crisp printing, applied indices, legible date wheel, and solid pushers, noting an amazing fit and finish for the price and an attractive aesthetic. Some owners find the metal bracelet squeaks, and the 24-hour subdial is less desirable than sub seconds. One owner criticizes the thick case, downward-angled lugs that can dig into the wrist, and a crystal with noticeable edge effects. Overall, owners rate the Helgray Silverstone (Refurbished) highly for its impressive build quality and aesthetic appeal at its price point.

Seiko Prospex SPEEDTIMER Mechanical Chronograph

The Seiko Prospex SPEEDTIMER Mechanical Chronograph is praised for its handsome, heritage-inspired design with a clean, balanced dial and an external tachymeter bezel. Reviewers highlight the upgraded case and bracelet, noting improved comfort and good value for a well-designed chronograph with an in-house movement. The caliber 8R48 movement features a vertical clutch and column wheel with MEMS technology for durability and precision. Points to consider include the 4:30 date window and a 14.6mm thickness, while the 45-hour power reserve is noted as an area for potential improvement. On balance, reviewers find the Seiko Prospex SPEEDTIMER Mechanical Chronograph to be a solid offering with good value, particularly for its design and in-house movement.

At a glance

12 of 29 specs differ
Diameter
Silverstone (Refurbished)40mm
Prospex SPEEDTIMER Mechanical Chronograph42mm
Power Reserve
Silverstone (Refurbished)40h
Prospex SPEEDTIMER Mechanical Chronograph45h
Water Resistance
Silverstone (Refurbished)50m
Prospex SPEEDTIMER Mechanical Chronograph100m
MSRP
Silverstone (Refurbished)$150
Prospex SPEEDTIMER Mechanical Chronograph$2,500

Full specifications

Case

4 specs
Diameter
40mm
42mm
Thickness
11.5mm
14.6mm
Lug-to-Lug
47mm
49.5mm
Water Resistance
50m
100m

Crystal & Dial

3 specs
Crystal Shape
Flat
Curved
AR Coating
Inner
Anti-reflective coating on inner surface
Lume
None
LumiBrite on hands and index(es)

Movement

4 specs
Caliber
Seiko VK64 (Meca-Quartz)
8R48
Type
Quartz
Automatic
Power Reserve
40h
45h
Jewels
25
34

Pricing

1 specs
MSRP
$150
$2,500
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