Which is bigger, the Objest simple black automatic or the Formex Reef 39.5 mm?

The Objest simple black automatic wears larger at 42mm versus 39.5mm for the Formex Reef 39.5 mm — a 2.5mm difference across the dial.

Which has better water resistance, the Objest simple black automatic or the Formex Reef 39.5 mm?

The Formex Reef 39.5 mm is rated to 300m versus 50m for the Objest simple black automatic.

What movement does the Objest simple black automatic run compared to the Formex Reef 39.5 mm?

Both watches run automatic movements — the Objest simple black automatic uses the ETA 2824-2 and the Formex Reef 39.5 mm uses the Sellita SW300-1.

Side by side

Objest simple black automaticvsFormex Reef 39.5 mm

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

Add a watch

Objest simple black automatic

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

simple black automatic42mm

Reef 39.5 mm39.5mm

Power Reserve

simple black automatic—

Reef 39.5 mm56h

Water Resistance

simple black automatic50m

Reef 39.5 mm300m

MSRP

simple black automatic—

Reef 39.5 mm$2,230

Full specifications

Case

6 specs

Crystal & Dial

2 specs

Dial Color

Black

Bahama Blue

Lume

None

Super-LumiNova

Movement

2 specs

Caliber

ETA 2824-2

Sellita SW300-1

Power Reserve

—

56h

Pricing

1 specs

MSRP

—

$2,230

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.

Compass Timepiecesmicro

Follow this matchup

Get a note when Objest simple black automatic vs Formex Reef 39.5 mm gets more votes, a community discussion, or a price drop. No account needed.

Adjacent matchups

People also compared

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

Compass Timepieces GratitudevsFormex Reef 39.5 mm Compass Timepieces ExplorervsFormex Reef 39.5 mm Formex Reef 39.5 mmvsTimefactors PRS-30 Compass Timepieces VoyagervsFormex Reef 39.5 mm Objest simple black automaticvsFormex Reef 42 mm Boldr BlastoisevsObjest simple black automatic

Edit this comparison Add another watch Explore more 38–43mm watches

Objest simple black automaticvsFormex Reef 39.5 mm

At a glance

Full specifications

More watches worth a look

Gratitude

Blastoise

Explorer

Argo

PRS-30

Voyager

Porto Covo

Klassik 42

Follow this matchup

People also compared