Which is cheaper, the Sternglas Naos XS Automatik or the Formex Reef 39.5 mm?

At MSRP the Sternglas Naos XS Automatik is the cheaper of the two at $431, against $2,230 for the Formex Reef 39.5 mm — a $1,799 gap before any retailer discounting.

Which is bigger, the Sternglas Naos XS Automatik or the Formex Reef 39.5 mm?

The Formex Reef 39.5 mm wears larger at 39.5mm versus 33mm for the Sternglas Naos XS Automatik — a 6.5mm difference across the dial.

Which has better water resistance, the Sternglas Naos XS Automatik or the Formex Reef 39.5 mm?

The Formex Reef 39.5 mm is rated to 300m versus 50m for the Sternglas Naos XS Automatik.

What movement does the Sternglas Naos XS Automatik run compared to the Formex Reef 39.5 mm?

Both watches run automatic movements — the Sternglas Naos XS Automatik uses the Miyota 6T15 and the Formex Reef 39.5 mm uses the Sellita SW300-1.

Side by side

Sternglas Naos XS AutomatikvsFormex Reef 39.5 mm

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

Sternglas Naos XS Automatik

naos-xs-automatik-gold

MSRP $431

Formex Reef 39.5 mm

reef-39.5-automatic-chronometer-cosc-300m-bahama-blue

MSRP $2,230

At a glance

11 of 29 specs differ

Diameter

Naos XS Automatik33mm

Reef 39.5 mm39.5mm

Power Reserve

Naos XS Automatik—

Reef 39.5 mm56h

Water Resistance

Naos XS Automatik50m

Reef 39.5 mm300m

MSRP

Naos XS Automatik$431

Reef 39.5 mm$2,230

Full specifications

Case

5 specs

Crystal & Dial

2 specs

Dial Color

—

Bahama Blue

Lume

None

Super-LumiNova

Movement

3 specs

Caliber

Miyota 6T15

Sellita SW300-1

Power Reserve

—

56h

Jewels

—

Pricing

1 specs

MSRP

$431

$2,230

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Sternglas Naos XS AutomatikvsFormex Reef 39.5 mm

At a glance

Full specifications

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