Which is cheaper, the Zelos Steel Blue (sellita) or the Formex Reef 39.5 mm?

At MSRP the Zelos Steel Blue (sellita) is the cheaper of the two at $629, against $2,230 for the Formex Reef 39.5 mm — a $1,601 gap before any retailer discounting.

Which is bigger, the Zelos Steel Blue (sellita) or the Formex Reef 39.5 mm?

The Formex Reef 39.5 mm wears larger at 39.5mm versus 39mm for the Zelos Steel Blue (sellita) — a 0.5mm difference across the dial.

Which has better water resistance, the Zelos Steel Blue (sellita) or the Formex Reef 39.5 mm?

The Formex Reef 39.5 mm is rated to 300m versus 50m for the Zelos Steel Blue (sellita).

Which has a longer power reserve, the Zelos Steel Blue (sellita) or the Formex Reef 39.5 mm?

The Formex Reef 39.5 mm carries a 56-hour power reserve against 40 hours on the Zelos Steel Blue (sellita).

What movement does the Zelos Steel Blue (sellita) run compared to the Formex Reef 39.5 mm?

The Zelos Steel Blue (sellita) runs a manual caliber (ETA/Peseux 7001), while the Formex Reef 39.5 mm runs a automatic (Sellita SW300-1).

Side by side

Zelos Steel Blue (sellita)vsFormex Reef 39.5 mm

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

Zelos Steel Blue (sellita)

comet-39mm-steel-blue

MSRP $629

Formex Reef 39.5 mm

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

MSRP $2,230

At a glance

14 of 29 specs differ

Diameter

Steel Blue (sellita)39mm

Reef 39.5 mm39.5mm

Power Reserve

Steel Blue (sellita)40h

Reef 39.5 mm56h

Water Resistance

Steel Blue (sellita)50m

Reef 39.5 mm300m

MSRP

Steel Blue (sellita)$629

Reef 39.5 mm$2,230

Full specifications

Case

7 specs

Crystal & Dial

3 specs

Crystal

Domed Sapphire

Sapphire

Dial Color

Steel Blue (Sellita)

Bahama Blue

Lume

None

Super-LumiNova

Movement

3 specs

Caliber

ETA/Peseux 7001

Sellita SW300-1

Type

Manual

Automatic

Power Reserve

40h

56h

Pricing

1 specs

MSRP

$629

$2,230

Follow this matchup

Get a note when Zelos Steel Blue (sellita) 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 Comet 39 Henry Archer SekvensvsFormex Reef 39.5 mm Formex Reef 39.5 mmvsYema Granvelle CMM.29 Geckota Tourbillon Hand WoundvsFormex Reef 39.5 mm Zelos Steel Blue (sellita)vsFormex Reef 42 mm Boldr BlastoisevsZelos Steel Blue (sellita)

Edit this comparison Add another watch Explore more 38–41mm watches

Zelos Steel Blue (sellita)vsFormex Reef 39.5 mm

At a glance

Full specifications

Follow this matchup

More watches worth a look

Comet 39

Blastoise

Sekvens

Argo

Granvelle CMM.29

Voyager

Tourbillon Hand Wound

Porto Covo

People also compared