Islander Bayport Automatic DivervsSeiko Prospex Sea
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.
Bayport Automatic Diver
Prospex Sea
Diameter
40mm
41.3mm
Lug-to-Lug
40mm
lowest
48.2mm
Thickness
13.5mm
12.5mm
lowest
Water Resistance
200m
300m
highest
Power Reserve
n/a
72h
MSRP
$349
lowest
$1,100
Movement
Seiko NH35
Seiko 6R55
Case
4 specsCrystal & Dial
3 specsMovement
3 specsPricing
1 specsReviews
Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.
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.
Owners and reviewers widely praise the Seiko Prospex Sea for its robust build quality and fair price, with many noting its comfortable silicone strap. Some owners find the watch's size, thickness, and weight to be uncomfortable for smaller wrists, while others consider the size perfect. The consensus is that the Seiko Prospex Sea offers excellent value and build quality for its price.
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