Which is cheaper, the Marathon CeraShell Pilot's Navigator or the Formex Reef 39.5 mm?

At MSRP the Marathon CeraShell Pilot's Navigator is the cheaper of the two at $550, against $2,230 for the Formex Reef 39.5 mm — a $1,680 gap before any retailer discounting.

Which is bigger, the Marathon CeraShell Pilot's Navigator or the Formex Reef 39.5 mm?

The Marathon CeraShell Pilot's Navigator wears larger at 41mm versus 39.5mm for the Formex Reef 39.5 mm — a 1.5mm difference across the dial.

Which has better water resistance, the Marathon CeraShell Pilot's Navigator or the Formex Reef 39.5 mm?

The Formex Reef 39.5 mm is rated to 300m versus 60m for the Marathon CeraShell Pilot's Navigator.

Which has a longer power reserve, the Marathon CeraShell Pilot's Navigator or the Formex Reef 39.5 mm?

The Formex Reef 39.5 mm carries a 56-hour power reserve against 40 hours on the Marathon CeraShell Pilot's Navigator.

What movement does the Marathon CeraShell Pilot's Navigator run compared to the Formex Reef 39.5 mm?

The Marathon CeraShell Pilot's Navigator runs a quartz caliber (ETA F06), while the Formex Reef 39.5 mm runs a automatic (Sellita SW300-1).

Side by side

Marathon CeraShell Pilot's NavigatorvsFormex Reef 39.5 mm

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

Marathon CeraShell Pilot's Navigator

41mm-cerashell-quartz-navigator-nav-on-ballistic-nylon-strap

MSRP $550

Formex Reef 39.5 mm

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

MSRP $2,230

At a glance

13 of 29 specs differ

Diameter

CeraShell Pilot's Navigator41mm

Reef 39.5 mm39.5mm

Power Reserve

CeraShell Pilot's Navigator40h

Reef 39.5 mm56h

Water Resistance

CeraShell Pilot's Navigator60m

Reef 39.5 mm300m

MSRP

CeraShell Pilot's Navigator$550

Reef 39.5 mm$2,230

Full specifications

Case

7 specs

Crystal & Dial

2 specs

Dial Color

Black

Bahama Blue

Lume

None

Super-LumiNova

Movement

3 specs

Caliber

ETA F06

Sellita SW300-1

Type

Quartz

Automatic

Power Reserve

40h

56h

Pricing

1 specs

MSRP

$550

$2,230

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