Side by side

Marnaut Safe Harbour 100CvsSeiko 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.

Marnaut Safe Harbour 100C

The Marnaut Safe Harbour is widely praised for its compact 39mm tonneau case and its unique sea urchin-inspired dial. Reviewers note the case wears well despite its 13.2mm thickness. One owner flagged a potential lume inconsistency, which was attributed to UV lighting effects. The slender handset can be difficult to read against the busy dial, and the faux-crocodile strap is stiff initially. Overall, owners and reviewers appreciate the Marnaut Safe Harbour for its distinctive dial and comfortable wearability.

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

12 of 29 specs differ
Diameter
Safe Harbour 100C39mm
Prospex SPEEDTIMER Mechanical Datsun 240Z Limited Edition39.5mm
Power Reserve
Safe Harbour 100C41h
Prospex SPEEDTIMER Mechanical Datsun 240Z Limited Edition72h
Water Resistance
Safe Harbour 100C100m
Prospex SPEEDTIMER Mechanical Datsun 240Z Limited Edition200m
MSRP
Safe Harbour 100C$899
Prospex SPEEDTIMER Mechanical Datsun 240Z Limited Edition$1,150

Full specifications

Case

5 specs
Category
Chronograph
Diameter
39mm
39.5mm
Thickness
13mm
12mm
Lug-to-Lug
45mm
44.5mm
Water Resistance
100m
200m

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

3 specs
Caliber
Sellita SW200-1
6R55
Power Reserve
41h
72h
Jewels
25
24

Pricing

1 specs
MSRP
$899
$1,150
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