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Nivada Grenchen Chronomaster 38mm Automatic ChronographvsSeiko Prospex SPEEDTIMER Mechanical Datsun 240Z Limited Edition

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.

Nivada Grenchen Chronomaster 38mm Automatic Chronograph

Owners widely appreciate the Nivada Grenchen Chronomaster 38mm Automatic Chronograph for its perfect 38mm size and faithful vintage reproduction, with one owner finding its worn bezel enhances its appeal. Reviewers praise its unique "baked" tropical dial, which mimics patina without the risks of a vintage piece. However, one owner reported a feeling of poor construction and lighter-than-expected weight, while another regretted the automatic caseback causing the watch to sit high on the wrist. The chronograph's 100m water resistance is noted as a slight limitation. On balance, owners and reviewers rate the Nivada Grenchen Chronomaster 38mm Automatic Chronograph highly for its excellent vintage aesthetic and unique dial that offers the enjoyment of a tropical watch without the associated risks.

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.

At a glance

16 of 29 specs differ
Diameter
Chronomaster 38mm Automatic Chronograph38mm
Prospex SPEEDTIMER Mechanical Datsun 240Z Limited Edition39.5mm
Power Reserve
Chronomaster 38mm Automatic Chronograph
Prospex SPEEDTIMER Mechanical Datsun 240Z Limited Edition72h
Water Resistance
Chronomaster 38mm Automatic Chronograph100m
Prospex SPEEDTIMER Mechanical Datsun 240Z Limited Edition200m
MSRP
Chronomaster 38mm Automatic Chronograph$2,085
Prospex SPEEDTIMER Mechanical Datsun 240Z Limited Edition$1,150

Full specifications

Case

6 specs
Diameter
38mm
39.5mm
Thickness
15.85mm
12mm
Lug-to-Lug
48.5mm
44.5mm
Finish
Brushed + Polished
Water Resistance
100m
200m
Caseback
316L Stainless Steel

Crystal & Dial

4 specs
Crystal Shape
Curved
AR Coating
Anti-reflective coating on inner surface
Dial Color
White
Lume
x1
LumiBrite on hands and index(es)

Movement

5 specs
Caliber
6R55
Beat Rate
4 vph
0 vph
Power Reserve
0h
72h
Jewels
0
24
Complications
GMT, Chronograph, Small seconds
None

Pricing

1 specs
MSRP
$2,085
$1,150
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