Islander Bayport Automatic Dive WatchvsSpinnaker Spence 300

Bayport Automatic Dive Watch
IslanderBayport Automatic Dive Watch

Ref. islander-bayport-automatic-dive-watch-with-silver-white-wave-dial-isl-313·MSRP $349

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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.

Islander Bayport Automatic Dive Watch at true scale

Bayport Automatic Dive Watch

Spinnaker Spence 300 at true scale

Spence 300

Diameter

40mm

40mm

Lug-to-Lug

40mm

lowest

48mm

Thickness

13.5mm

11.5mm

lowest

Water Resistance

200m

300m

highest

MSRP

$349

lowest

$650

Movement

Seiko NH35

Seiko NH35

Case

4 specs
Thickness
13.5mm
11.5mm
Lug-to-Lug
40mm
48mm
Material
Stainless Steel
316L Stainless Steel
Water Resistance
200m
300m

Crystal & Dial

1 specs
Dial Color
n/a
Aquamarine

Pricing

1 specs
MSRP
$349
$650
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Reviews

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

Islander Bayport Automatic Dive Watch

Owners widely praise the Islander Bayport Automatic Dive Watch for its versatile 40mm case size and retro styling, featuring a unique grey dial with a framed date window and a pie pan design. Reviewers and owners alike highlight the watch's well-executed finishing with chamfered edges, a tight 120-click bezel, and the reliable Seiko NH35 automatic movement. Accuracy reports vary, with some owners seeing between -3 and +6 seconds per day, while others note that the NH36 movement in comparable models can be regulated to achieve near-zero daily deviation. Overall, owners and reviewers consider the Islander Bayport Automatic Dive Watch an exceptional value proposition for the brand.

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.