Side by side

Fortis Stratoliner S-41vsIslander Islander Thunderbolt Pilot Watch with Black Mother of Pearl Dial #ISL-322

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

Stratoliner S-41
FortisStratoliner S-41
MSRP $5,450
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

At a glance

16 of 29 specs differ
Diameter
Stratoliner S-4141mm
Islander Thunderbolt Pilot Watch with Black Mother of Pearl Dial #ISL-32240mm
Power Reserve
Stratoliner S-4160h
Islander Thunderbolt Pilot Watch with Black Mother of Pearl Dial #ISL-322
Water Resistance
Stratoliner S-41200m
Islander Thunderbolt Pilot Watch with Black Mother of Pearl Dial #ISL-322100m
MSRP
Stratoliner S-41$5,450
Islander Thunderbolt Pilot Watch with Black Mother of Pearl Dial #ISL-322$429

Full specifications

Case

8 specs
Category
Chronograph
Pilot
Diameter
41mm
40mm
Thickness
14mm
12.5mm
Lug-to-Lug
0mm
Lug Width
21mm
20mm
Finish
Brushed and polished
Water Resistance
200m
100m
Caseback
Solid
Screw-down

Crystal & Dial

3 specs
AR Coating
Inner
Underside
Dial Color
White
Indices
Applied

Movement

4 specs
Caliber
Manufacture Caliber WERK 17
Seiko NH38
Beat Rate
28,800 vph
0 vph
Power Reserve
60h
0h
Jewels
36
0

Pricing

1 specs
MSRP
$5,450
$429

Follow this matchup

Get a note when Fortis Stratoliner S-41 vs Islander Thunderbolt Pilot Watch with Black Mother of Pearl Dial #ISL-322 gets more votes, a community discussion, or a price drop. No account needed.

What people say

Owners + reviewers, side by side

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

Fortis Stratoliner S-41

Owners widely praise the Fortis Stratoliner S-41 for its purpose-built design and outstanding details, particularly its space blue lume and bright orange date on the dial. Reviewers note the WERK 17 movement offers a 60-hour power reserve. However, the Fortis Stratoliner S-41's 41mm case thickness and lug-to-lug distance lead some to perceive it as wearing large, and the dial's small text and flat design are flagged as potential drawbacks. Overall, owners and reviewers highlight the Fortis Stratoliner S-41's unique design and innovative movement as its primary strengths.

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.

Keep exploring

More watches worth a look

Matched to the watches above on size, movement, style and price — microbrands first. Open any one to dig in.

Adjacent matchups

People also compared

Comparisons nearby in the catalog — alternatives to the watches above paired against the matchup.