Side by side

Islander Islander Thunderbolt Pilot Watch with Black Mother of Pearl Dial #ISL-322vsMarathon Steel Navigator SSNAV 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 Quartz
MarathonSteel Navigator SSNAV Quartz
MSRP $1,000

At a glance

16 of 29 specs differ
Diameter
Islander Thunderbolt Pilot Watch with Black Mother of Pearl Dial #ISL-32240mm
Steel Navigator SSNAV Quartz41mm
Power Reserve
Islander Thunderbolt Pilot Watch with Black Mother of Pearl Dial #ISL-322
Steel Navigator SSNAV Quartz40h
Water Resistance
Islander Thunderbolt Pilot Watch with Black Mother of Pearl Dial #ISL-322100m
Steel Navigator SSNAV Quartz60m
MSRP
Islander Thunderbolt Pilot Watch with Black Mother of Pearl Dial #ISL-322$429
Steel Navigator SSNAV Quartz$1,000

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
$1,000

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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 Quartz

The Marathon Steel Navigator SSNAV Quartz is widely praised for its highly accurate Swiss Made ETA F06.412 PreciDrive movement, with stated accuracy of ±10 seconds per year, and its constant low-light visibility from self-illuminating tritium tubes. Owners find the watch comfortable and impressive, noting its 41mm sandblasted steel case with an asymmetrical design, bi-directional GMT bezel with excellent action, sapphire crystal, and 100m water resistance with a screw-down crown. On balance, owners and reviewers rate the Marathon Steel Navigator SSNAV Quartz highly for its robust tool watch design and exceptional accuracy at its price point.

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