Islander Bayport Automatic DivervsZenith Chronomaster Solo Sport

Bayport Automatic Diver
IslanderBayport Automatic Diver

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

lug2lug doesn't sell watches. Buy links open the brand's or seller's own site. Some links are affiliate links: lug2lug may earn a commission at no extra cost to you. Disclosures

Measurements

Catalog photos are all shot at the same flattering size. These aren't: every case below shares one millimeter scale.

Islander Bayport Automatic Diver at true scale

Bayport Automatic Diver

Zenith Chronomaster Solo Sport at true scale

Chronomaster Solo Sport

Diameter

40mm

40mm

Lug-to-Lug

40mm

n/a

Thickness

13.5mm

13.1mm

lowest

Water Resistance

200m

200m

Power Reserve

n/a

60h

MSRP

$349

lowest

$10,900

Movement

Seiko NH35

El Primero 3620 SC

Case

3 specs
Thickness
13.5mm
13.13mm
Lug-to-Lug
40mm
n/a
Lug Width
20mm
n/a

Crystal & Dial

4 specs
Crystal Shape
n/a
Domed
AR Coating
n/a
Both sides
Dial Color
n/a
Black
Texture
n/a
Z pattern

Movement

5 specs
Caliber
Seiko NH35
El Primero 3620 SC
Beat Rate
0 vph
36,000 vph
Power Reserve
0h
60h
Jewels
0
31
Complications
None
Date

Pricing

1 specs
MSRP
$349
$10,900
Keep your wishlist and collection together in the appExplore the app

Reviews

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

Islander Bayport Automatic Diver

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.

Zenith Chronomaster Solo Sport

The Zenith Chronomaster Solo Sport is widely praised for its comfortable 40mm wearability, solid ceramic bezel, and the integrated Zenclasp bracelet with tool-free micro-adjustment. Owners describe it as a feature-packed and versatile watch, with one calling it an "absolute eye catcher" and their favorite Zenith. Some find the presence of an El Primero movement without a chronograph function contradictory, and one owner expressed a personal preference for a cleaner dial without a date function. A few owners noted that the clasp can be difficult to open, though this is contrasted by the tool-free micro-adjustment feature. On balance, owners and reviewers rate the Zenith Chronomaster Solo Sport highly for its well-built, comfortable design and the value it offers compared to its chronograph sibling.