Side by side

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

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 Auto
MarathonSteel Navigator SSNAV Auto
MSRP $1,300

At a glance

15 of 29 specs differ
Diameter
Islander Thunderbolt Pilot Watch with Black Mother of Pearl Dial #ISL-32240mm
Steel Navigator SSNAV Auto41mm
Power Reserve
Islander Thunderbolt Pilot Watch with Black Mother of Pearl Dial #ISL-322
Steel Navigator SSNAV Auto40h
Water Resistance
Islander Thunderbolt Pilot Watch with Black Mother of Pearl Dial #ISL-322100m
Steel Navigator SSNAV Auto60m
MSRP
Islander Thunderbolt Pilot Watch with Black Mother of Pearl Dial #ISL-322$429
Steel Navigator SSNAV Auto$1,300

Full specifications

Case

7 specs
Diameter
40mm
41mm
Thickness
12.5mm
11.5mm
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

4 specs
Caliber
Seiko NH38
Sellita SW200-1
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 Auto

The Marathon Steel Navigator SSNAV Auto is praised for its high-accuracy quartz movement, with owners noting its comfort and reliable performance. Reviewers highlight its functional tool-watch appeal, featuring a sandblasted steel case, tritium tubes for constant low-light visibility, and 100-meter water resistance. One owner finds the 41mm case runs a bit small. The Marathon Steel Navigator SSNAV Auto utilizes an ETA F06.412 quartz movement with a claimed accuracy of +/- 10 seconds per year and includes a GMT bidirectional bezel. Overall, owners and reviewers rate the Marathon Steel Navigator SSNAV Auto highly for its comfortable wear and dependable, high-accuracy quartz movement.

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