Which is cheaper, the Praesidus 42mm Automatic or the Formex Reef 39.5 mm?

At MSRP the Praesidus 42mm Automatic is the cheaper of the two at $680, against $2,230 for the Formex Reef 39.5 mm — a $1,550 gap before any retailer discounting.

Which is bigger, the Praesidus 42mm Automatic or the Formex Reef 39.5 mm?

The Formex Reef 39.5 mm wears larger at 39.5mm versus 38mm for the Praesidus 42mm Automatic — a 1.5mm difference across the dial.

Which has better water resistance, the Praesidus 42mm Automatic or the Formex Reef 39.5 mm?

The Formex Reef 39.5 mm is rated to 300m versus 100m for the Praesidus 42mm Automatic.

Which has a longer power reserve, the Praesidus 42mm Automatic or the Formex Reef 39.5 mm?

The Formex Reef 39.5 mm carries a 56-hour power reserve against 40 hours on the Praesidus 42mm Automatic.

What movement does the Praesidus 42mm Automatic run compared to the Formex Reef 39.5 mm?

Both watches run automatic movements — the Praesidus 42mm Automatic uses the Seiko NH35 and the Formex Reef 39.5 mm uses the Sellita SW300-1.

Side by side

Praesidus 42mm AutomaticvsFormex Reef 39.5 mm

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

Praesidus 42mm Automatic

P-42-HP-GRSG

MSRP $680

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

42mm Automatic38mm

Reef 39.5 mm39.5mm

Power Reserve

42mm Automatic40h

Reef 39.5 mm56h

Water Resistance

42mm Automatic100m

Reef 39.5 mm300m

MSRP

42mm Automatic$680

Reef 39.5 mm$2,230

Full specifications

Case

6 specs

Crystal & Dial

2 specs

Dial Color

42mm Automatic

Bahama Blue

Lume

None

Super-LumiNova

Movement

2 specs

Caliber

Seiko NH35

Sellita SW300-1

Power Reserve

40h

56h

Pricing

1 specs

MSRP

$680

$2,230

Follow this matchup

Get a note when Praesidus 42mm Automatic vs Formex Reef 39.5 mm gets more votes, a community discussion, or a price drop. No account needed.

Keep exploring

More watches worth a look

Matched to the watches above on size, movement, style and price — microbrands first. Open any one to dig in.

Zelosmicro

Adjacent matchups

People also compared

Comparisons nearby in the catalog — alternatives to the watches above paired against the matchup.

Formex Reef 39.5 mmvsZelos Swordfish Field 38 Maen Manhattan 37 IFL EditionvsFormex Reef 39.5 mm Mr Jones Watches A perfectly useless afternoonvsFormex Reef 39.5 mm Spinnaker Hull California (Olive Oyl Red)vsFormex Reef 39.5 mm Henry Archer TidevandvsPraesidus 42mm Automatic Henry Archer VesterhavvsPraesidus 42mm Automatic

Edit this comparison Add another watch Explore more 37–41mm watches

Praesidus 42mm AutomaticvsFormex Reef 39.5 mm

At a glance

Full specifications

Follow this matchup

More watches worth a look

Swordfish Field 38

Tidevand

Manhattan 37 IFL Edition

Vesterhav

A perfectly useless afternoon

Spearfish 3

Hull California (Olive Oyl Red)

Beam me up! mechanical

People also compared