Addiesdive Chronograph AD2520vsSeiko Prospex Speedtimer

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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.

Addiesdive Chronograph AD2520 at true scale

Chronograph AD2520

Seiko Prospex Speedtimer at true scale

Prospex Speedtimer

Diameter

40mm

39mm

Lug-to-Lug

48mm

45.5mm

lowest

Thickness

13mm

lowest

13.3mm

Water Resistance

100m

100m

MSRP

$80

lowest

$725

Movement

Seiko VK64

Seiko V192

Case

3 specs
Diameter
40mm
39mm
Thickness
13mm
13.3mm
Lug-to-Lug
48mm
45.5mm

Crystal & Dial

5 specs
Crystal
Mineral
Sapphire
Crystal Shape
n/a
Curved
AR Coating
n/a
Anti-reflective coating on inner surface
Dial Color
n/a
n/a
Lume
None
LumiBrite on hands and index(es)

Movement

2 specs
Caliber
Seiko VK64
Seiko V192
Type
Meca-Quartz
Quartz

Pricing

1 specs
MSRP
$80
$725
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Reviews

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

Addiesdive Chronograph AD2520

Owners widely praise the Addiesdive 40mm VK64 Chronograph Watch AD2520's surprising quality and finishing for its price point, noting a well-built bracelet that rivals Seiko's 5 series and bright, durable BGW9 lume that lasts through the night. Reviewers flag the Seiko VK64 movement's 24-hour subdial as a functional detractor, serving only as a day/night indicator rather than tracking elapsed time. One owner notes the watch's 100m water resistance and 40mm case size contribute to its wearability. Overall, owners rate the Addiesdive 40mm VK64 Chronograph Watch AD2520 highly for its exceptional finishing and lume at the price, despite functional criticisms of the VK64 movement's subdial.

Seiko Prospex Speedtimer

Owners widely praise the Seiko Prospex SPEEDTIMER for its vintage-inspired design and versatility as an everyday watch. Some owners find the 39mm case size comfortable and well-suited for active use. Reviewers note the solar-powered V192 movement offers a six-month power reserve. Criticisms include the watch's thickness, which some find to be between 13-15mm, and the 24-hour subdial. The price point is a recurring point of contention, with some owners questioning the value for a solar quartz chronograph. On balance, owners and reviewers find the Seiko Prospex SPEEDTIMER a capable and attractive watch, with its design being the most frequently cited positive attribute.

From video reviewers

The Seiko Prospex SPEEDTIMER's solar movement provides reliable power without battery replacements and accurate timekeeping, with a claimed accuracy of ±15 seconds per month. A notable trade-off is the watch's slightly thicker profile and somewhat lacking lume brightness. Reviewers disagree on whether the bezel action is smooth and clicky, with one reviewer praising it and the other not mentioning it.