Which is cheaper, the Gruppo Gamma Vanguard Steel Date or the Fortis Stratoliner S-41?

At MSRP the Gruppo Gamma Vanguard Steel Date is the cheaper of the two at $790, against $5,450 for the Fortis Stratoliner S-41 — a $4,660 gap before any retailer discounting.

Which is bigger, the Gruppo Gamma Vanguard Steel Date or the Fortis Stratoliner S-41?

The Gruppo Gamma Vanguard Steel Date wears larger at 42mm versus 41mm for the Fortis Stratoliner S-41 — a 1mm difference across the dial.

Which has better water resistance, the Gruppo Gamma Vanguard Steel Date or the Fortis Stratoliner S-41?

The Fortis Stratoliner S-41 is rated to 200m versus 100m for the Gruppo Gamma Vanguard Steel Date.

Which has a longer power reserve, the Gruppo Gamma Vanguard Steel Date or the Fortis Stratoliner S-41?

The Fortis Stratoliner S-41 carries a 60-hour power reserve against 42 hours on the Gruppo Gamma Vanguard Steel Date.

What movement does the Gruppo Gamma Vanguard Steel Date run compared to the Fortis Stratoliner S-41?

Both watches run automatic movements — the Gruppo Gamma Vanguard Steel Date uses the Miyota 9015 and the Fortis Stratoliner S-41 uses the Manufacture Caliber WERK 17.

Side by side

Gruppo Gamma Vanguard Steel DatevsFortis Stratoliner S-41

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

Gruppo Gamma Vanguard Steel Date

ag-11

MSRP $790

Fortis Stratoliner S-41

S-41

MSRP $5,450

At a glance

14 of 29 specs differ

Diameter

Vanguard Steel Date42mm

Stratoliner S-4141mm

Power Reserve

Vanguard Steel Date42h

Stratoliner S-4160h

Water Resistance

Vanguard Steel Date100m

Stratoliner S-41200m

MSRP

Vanguard Steel Date$790

Stratoliner S-41$5,450

Full specifications

Case

6 specs

Crystal & Dial

3 specs

AR Coating

Yes

Inner

Dial Color

Forged Carbon

White

Lume

Super-LumiNova

None

Movement

4 specs

Caliber

Miyota 9015

Manufacture Caliber WERK 17

Power Reserve

42h

60h

Jewels

Complications

Date

None

Pricing

1 specs

MSRP

$790

$5,450

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