Side by side

Islander Islander 38mm Automatic Dive Watch with Radiant Blue Dial #ISL-63vsSeiko Prospex Marinemaster Marinemaster 1965 Heritage Diver's Watch

The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.

Islander 38mm Automatic Dive Watch with Radiant Blue Dial #ISL-63
IslanderIslander 38mm Automatic Dive Watch with Radiant Blue Dial #ISL-63
MSRP $429

At a glance

15 of 29 specs differ
Diameter
Islander 38mm Automatic Dive Watch with Radiant Blue Dial #ISL-6338mm
Prospex Marinemaster Marinemaster 1965 Heritage Diver's Watch39.5mm
Power Reserve
Islander 38mm Automatic Dive Watch with Radiant Blue Dial #ISL-63
Prospex Marinemaster Marinemaster 1965 Heritage Diver's Watch45h
Water Resistance
Islander 38mm Automatic Dive Watch with Radiant Blue Dial #ISL-63200m
Prospex Marinemaster Marinemaster 1965 Heritage Diver's Watch200m
MSRP
Islander 38mm Automatic Dive Watch with Radiant Blue Dial #ISL-63$429
Prospex Marinemaster Marinemaster 1965 Heritage Diver's Watch$2,800

Full specifications

Case

5 specs
Diameter
38mm
39.5mm
Thickness
13mm
12.3mm
Lug-to-Lug
44.5mm
47.2mm
Finish
Brushed and polished
Caseback
Engraved screw-in back
Solid

Crystal & Dial

5 specs
Crystal Shape
Double Domed
Box
AR Coating
Yes
Anti-reflective coating on inner surface
Dial Color
Black
Indices
Applied
Lume
None
LumiBrite on hands, index(es) and bezel

Movement

4 specs
Caliber
Seiko NH36
6L37
Beat Rate
0 vph
28,800 vph
Power Reserve
0h
45h
Jewels
0
26

Pricing

1 specs
MSRP
$429
$2,800

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What people say

Owners + reviewers, side by side

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

Islander 38mm Automatic Dive Watch with Radiant Blue Dial #ISL-63

The Islander 38mm Automatic Dive Watch with Radiant Blue Dial #ISL-63 is praised for its screw pins, milled scissor clasp, and embossed ceramic bezel, offering excellent specifications for its price. Owners note its better alignment compared to some alternatives and appreciate its design inspiration. Overall, owners rate the Islander 38mm Automatic Dive Watch with Radiant Blue Dial #ISL-63 highly for its build features and value.

Seiko Prospex Marinemaster Marinemaster 1965 Heritage Diver's Watch

The Seiko Prospex Marinemaster 1965 Heritage Diver's Watch is praised for its faithful re-creation of the 62MAS design, with reviewers noting improved wearability due to smaller case sizes (38mm to 40mm) and updated bracelets. Specific models feature a stainless steel case with super-hard coating, ceramic bezel, and a tool-free extension system on the bracelet. Accuracy figures vary, with one model rated at -5/+10 seconds per day and another at -10/+15 seconds per day, powered by movements like the Caliber 8L45 or 6L37 offering 72-hour or 46-hour power reserves respectively. Some reviewers point out drawbacks such as an unsigned winding crown, a lack of tool-free micro-adjust on the clasp for certain models, and a secondary GMT function on one variant. The price point, ranging from $2,800 to $3,600, is considered high by some, especially when compared to other Seiko or Grand Seiko offerings.

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