Lorier Neptune SIVvsSpinnaker Spence 300
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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.

Neptune SIV

Spence 300
Diameter
39mm
40mm
Lug-to-Lug
n/a
48mm
Thickness
n/a
11.5mm
Water Resistance
200m
300m
highest
MSRP
$599
lowest
$650
Movement
Automatic
Seiko NH35
Case
5 specsCrystal & Dial
1 specsMovement
1 specsPricing
1 specsReviews
Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.
Owners widely praise the Lorier Neptune SIV for its balanced, vintage-inspired design and affordability, making it a versatile choice for daily wear. The fully brushed flat-link bracelet is noted for its comfort and taper, though some find its feel less luxurious than higher-end options. A minority of owners express a preference for sapphire over the acrylic crystal and find its case proportions less refined than a competitor. Overall, owners rate the Lorier Neptune SIV highly for its vintage aesthetic and value proposition.
Owners widely praise the Spinnaker Spence 300 for its slim 10.9mm case and 40mm diameter, offering a comfortable and versatile wear. Reviewers and owners alike highlight its value, with some seeing it as a budget alternative to more expensive dive watches. The watch features a Seiko NH35 automatic movement and 300m water resistance. However, some community members find the dial printing and bracelet finishing to be less refined, and a few suggest other brands offer better value at similar price points. On balance, owners and reviewers rate the Spinnaker Spence 300 highly for its impressive case dimensions and overall value proposition.
The watch's thin 10.9mm profile for a 300m diver is a key strength. No shared weakness was identified.
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