Which is cheaper, the Fortis Stratoliner S-41 or the Spinnaker Croft Mid-Size Skeleton?

At MSRP the Spinnaker Croft Mid-Size Skeleton is the cheaper of the two at $425, against $5,450 for the Fortis Stratoliner S-41 — a $5,025 gap before any retailer discounting.

Which is bigger, the Fortis Stratoliner S-41 or the Spinnaker Croft Mid-Size Skeleton?

The Fortis Stratoliner S-41 wears larger at 41mm versus 40mm for the Spinnaker Croft Mid-Size Skeleton — a 1mm difference across the dial.

Which has better water resistance, the Fortis Stratoliner S-41 or the Spinnaker Croft Mid-Size Skeleton?

The Fortis Stratoliner S-41 is rated to 200m versus 100m for the Spinnaker Croft Mid-Size Skeleton.

Which has a longer power reserve, the Fortis Stratoliner S-41 or the Spinnaker Croft Mid-Size Skeleton?

The Fortis Stratoliner S-41 carries a 60-hour power reserve against 40 hours on the Spinnaker Croft Mid-Size Skeleton.

What movement does the Fortis Stratoliner S-41 run compared to the Spinnaker Croft Mid-Size Skeleton?

Both watches run automatic movements — the Fortis Stratoliner S-41 uses the Manufacture Caliber WERK 17 and the Spinnaker Croft Mid-Size Skeleton uses the SII NH38A.

Side by side

Fortis Stratoliner S-41vsSpinnaker Croft Mid-Size Skeleton

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

Fortis Stratoliner S-41

S-41

MSRP $5,450

Spinnaker Croft Mid-Size Skeleton

croft-mid-size-skeleton-automatic-spongebob-squarepants-peek-a-boo-limited-edition-dollar-diver-sp-5152-01

MSRP $425

At a glance

11 of 29 specs differ

Diameter

Stratoliner S-4141mm

Croft Mid-Size Skeleton40mm

Power Reserve

Stratoliner S-4160h

Croft Mid-Size Skeleton40h

Water Resistance

Stratoliner S-41200m

Croft Mid-Size Skeleton100m

MSRP

Stratoliner S-41$5,450

Croft Mid-Size Skeleton$425

Full specifications

Case

6 specs

Crystal & Dial

1 specs

Dial Color

White

Dollar Diver

Movement

3 specs

Caliber

Manufacture Caliber WERK 17

SII NH38A

Power Reserve

60h

40h

Jewels

Pricing

1 specs

MSRP

$5,450

$425

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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.

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.

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Spinnaker Croft Mid-Size Skeleton

The Spinnaker Croft Mid-Size Skeleton is noted for its 40mm steel case, sapphire crystal, and 150m water resistance. One owner reports strong performance from the TMI NH70 movement at -3 seconds per day, with very nice lume. On balance, owners find the Spinnaker Croft Mid-Size Skeleton to be a pretty nice option, particularly for its movement performance and lume.

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