Which is cheaper, the Fortis Flieger F-41 Werk 7 or the Spinnaker Croft Mid-Size Skeleton?

At MSRP the Spinnaker Croft Mid-Size Skeleton is the cheaper of the two at $425, against $4,510 for the Fortis Flieger F-41 Werk 7 — a $4,085 gap before any retailer discounting.

Which is bigger, the Fortis Flieger F-41 Werk 7 or the Spinnaker Croft Mid-Size Skeleton?

The Fortis Flieger F-41 Werk 7 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 Flieger F-41 Werk 7 or the Spinnaker Croft Mid-Size Skeleton?

The Fortis Flieger F-41 Werk 7 is rated to 200m versus 100m for the Spinnaker Croft Mid-Size Skeleton.

Which has a longer power reserve, the Fortis Flieger F-41 Werk 7 or the Spinnaker Croft Mid-Size Skeleton?

The Spinnaker Croft Mid-Size Skeleton carries a 40-hour power reserve against 38 hours on the Fortis Flieger F-41 Werk 7.

What movement does the Fortis Flieger F-41 Werk 7 run compared to the Spinnaker Croft Mid-Size Skeleton?

Both watches run automatic movements — the Fortis Flieger F-41 Werk 7 uses the Werk 7 (Manufacture) and the Spinnaker Croft Mid-Size Skeleton uses the SII NH38A.

Side by side

Fortis Flieger F-41 Werk 7vsSpinnaker Croft Mid-Size Skeleton

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

Fortis Flieger F-41 Werk 7

F-41 Werk 7

MSRP $4,510

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

Flieger F-41 Werk 741mm

Croft Mid-Size Skeleton40mm

Power Reserve

Flieger F-41 Werk 738h

Croft Mid-Size Skeleton40h

Water Resistance

Flieger F-41 Werk 7200m

Croft Mid-Size Skeleton100m

MSRP

Flieger F-41 Werk 7$4,510

Croft Mid-Size Skeleton$425

Full specifications

Case

6 specs

Crystal & Dial

1 specs

Dial Color

Black

Dollar Diver

Movement

3 specs

Caliber

Werk 7 (Manufacture)

SII NH38A

Power Reserve

38h

40h

Jewels

Pricing

1 specs

MSRP

$4,510

$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 Flieger F-41 Werk 7

The Fortis Flieger is widely praised for its robust build quality, superb readability, and excellent fit and finish, with reviewers highlighting the utilitarian dial and Brixtrack markers. Some find the 39mm case wears large due to its 50mm lug-to-lug span, while others note the 41mm versions offer better proportions. The Werk 7 movement provides a 70-hour power reserve, though one review mentions the UW-30 movement in a 39mm model has a 38-hour power reserve. On balance, reviewers rate the Fortis Flieger highly for its practical design and solid construction at its price point.

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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