Spinnaker Spence 300vsSan Martin BB58

BB58
San MartinBB58

Ref. eu-warehouse-san-martin-bb58-nh35-automatic-watch-sn008c·MSRP $158

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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.

Spinnaker Spence 300 at true scale

Spence 300

San Martin BB58 at true scale

BB58

Diameter

40mm

40mm

Lug-to-Lug

48mm

n/a

Thickness

11.5mm

n/a

Water Resistance

300m

highest

200m

MSRP

$650

$158

lowest

Movement

Seiko NH35

Seiko NH35

Case

5 specs
Thickness
11.5mm
n/a
Lug-to-Lug
48mm
n/a
Lug Width
20mm
n/a
Material
316L Stainless Steel
Stainless Steel
Water Resistance
300m
200m

Crystal & Dial

1 specs
Dial Color
Aquamarine
n/a

Pricing

1 specs
MSRP
$650
$158
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Reviews

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

Spinnaker Spence 300

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.

From video reviewers

The watch's thin 10.9mm profile for a 300m diver is a key strength. No shared weakness was identified.

San Martin BB58

Owners rate the San Martin BB58 very highly for its build and value. Multiple owners praise the on-the-fly micro-adjust clasp as solid, functional and a standout addition, with one saying they have not seen a $1k watch that can touch it, and another calling the BB58 the superior homage to the original and "basically as close as you can get without paying Tudor prices." Owners describe it as premium rather than cheap, and one calls its quality fantastic for the price. Criticism is limited to one owner's objections to the riveted bracelet links and the logo. Overall, owners rate the San Martin BB58 as a standout value because its clasp, finishing and build punch well above its price.