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Seiko Prospex SPEEDTIMER Mechanical Datsun 240Z Limited EditionvsStudio Underd0g Watermelon (Gen3)

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.

Seiko Prospex SPEEDTIMER Mechanical Datsun 240Z Limited Edition

The Seiko Prospex SPEEDTIMER Mechanical Datsun 240Z Limited Edition is praised for its vintage racing concept, applied markers, and dial that shifts from cream to silver with orange accents. Owners appreciate the Datsun logo, dual crowns, and internal countdown bezel, with some noting Seiko's finishing is top-notch. However, some find the dial text cluttered, particularly "automatic 3 days," and consider the price point too high. The watch features a 42mm black-coated stainless steel case, an external tachymeter bezel, and Seiko's 8R48 automatic chronograph movement with a 45-hour power reserve. On balance, owners rate the Seiko Prospex SPEEDTIMER Mechanical Datsun 240Z Limited Edition well for its unique vintage concept and quality finishing, though price remains a point of contention for some.

Studio Underd0g Watermelon (Gen3)

Owners widely praise the Studio Underd0g Watermelon (Gen3) for its fun, entrepreneurial, and affordable nature, with a design described as "Bauhaus meets Bugs Bunny." However, some find its colors a love-it-or-hate-it feature and others perceive the overall quality and finishing as a tier below comparable watches. Accuracy figures are not specified, but one owner found the watch too thick for their taste. The chronograph function has been noted as potentially sticky or jumpy. On balance, owners are divided on the Studio Underd0g Watermelon (Gen3), with opinions split between its unique design and perceived value for money.

At a glance

18 of 29 specs differ
Diameter
Prospex SPEEDTIMER Mechanical Datsun 240Z Limited Edition39.5mm
Watermelon (Gen3)38.5mm
Power Reserve
Prospex SPEEDTIMER Mechanical Datsun 240Z Limited Edition72h
Watermelon (Gen3)40h
Water Resistance
Prospex SPEEDTIMER Mechanical Datsun 240Z Limited Edition200m
Watermelon (Gen3)
MSRP
Prospex SPEEDTIMER Mechanical Datsun 240Z Limited Edition$1,150
Watermelon (Gen3)$550

Full specifications

Case

7 specs
Diameter
39.5mm
38.5mm
Thickness
12mm
Lug-to-Lug
44.5mm
Lug Width
20mm
Finish
Brushed and Polished
Water Resistance
200m
Caseback
Solid

Crystal & Dial

4 specs
Crystal Shape
Curved
Flat
AR Coating
Anti-reflective coating on inner surface
Inside
Indices
Applied
Lume
LumiBrite on hands and index(es)
None

Movement

6 specs
Caliber
6R55
Beat Rate
0 vph
28,800 vph
Power Reserve
72h
40h
Jewels
24
25
Hacking
No
Yes
Hand-winding
No
Yes

Pricing

1 specs
MSRP
$1,150
$550
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