Side by side

Islander Islander Thunderbolt Pilot Watch with Black Mother of Pearl Dial #ISL-322vsMarathon Steel Navigator SSNAV-D Quartz

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

Islander Thunderbolt Pilot Watch with Black Mother of Pearl Dial #ISL-322
IslanderIslander Thunderbolt Pilot Watch with Black Mother of Pearl Dial #ISL-322
MSRP $429
Steel Navigator SSNAV-D Quartz
MarathonSteel Navigator SSNAV-D Quartz
MSRP $1,300

At a glance

16 of 29 specs differ
Diameter
Islander Thunderbolt Pilot Watch with Black Mother of Pearl Dial #ISL-32240mm
Steel Navigator SSNAV-D Quartz41mm
Power Reserve
Islander Thunderbolt Pilot Watch with Black Mother of Pearl Dial #ISL-322
Steel Navigator SSNAV-D Quartz40h
Water Resistance
Islander Thunderbolt Pilot Watch with Black Mother of Pearl Dial #ISL-322100m
Steel Navigator SSNAV-D Quartz60m
MSRP
Islander Thunderbolt Pilot Watch with Black Mother of Pearl Dial #ISL-322$429
Steel Navigator SSNAV-D Quartz$1,300

Full specifications

Case

7 specs
Diameter
40mm
41mm
Thickness
12.5mm
11mm
Lug-to-Lug
0mm
48mm
Material
Stainless Steel
316L Stainless Steel
Finish
Brushed and polished
Water Resistance
100m
60m
Caseback
Screw-down
Solid

Crystal & Dial

3 specs
AR Coating
Underside
Inner
Dial Color
Black
Indices
Applied

Movement

5 specs
Caliber
Seiko NH38
Swiss High-Torque Quartz
Type
Automatic
Quartz
Beat Rate
0 vph
28,800 vph
Power Reserve
0h
40h
Jewels
0
25

Pricing

1 specs
MSRP
$429
$1,300

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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 Thunderbolt Pilot Watch with Black Mother of Pearl Dial #ISL-322

Owners widely praise the Islander Thunderbolt Pilot Watch with Black Mother of Pearl Dial #ISL-322 for its gorgeous, color-popping black mother-of-pearl dial and good case finishing, with some appreciating its distinct bead-blasted case and H-link bracelet. The $375 price is noted as a strong value for a true mother-of-pearl watch. However, opinions are divided on the dial text font and the Islander logo, with some finding them unattractive and others seeing them as minor issues on an otherwise appealing tool watch. On balance, owners rate the Islander Thunderbolt Pilot Watch with Black Mother of Pearl Dial #ISL-322 highly for its striking mother-of-pearl dial and value proposition.

Marathon Steel Navigator SSNAV-D Quartz

The Marathon Steel Navigator SSNAV-D Quartz is widely praised for its high-accuracy Swiss Made ETA F06.412 HeavyDrive-PreciDrive quartz movement, rated at +/- 10 seconds per year, and its tritium lume. Reviewers and owners highlight its functional tool-watch appeal, noting the sandblasted steel case with an asymmetric design, excellent bi-directional bezel action, and drilled lug holes. Some owners find it perfectly suited for sport/rugged use, though not necessarily as an everyday watch. One owner points out that the case's distinctive asymmetry deviates from current aesthetic trends. Overall, owners and reviewers rate the Marathon Steel Navigator SSNAV-D Quartz highly for its robust build and exceptional timekeeping accuracy at its price point.

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