Which is cheaper, the Airain Watches Sous-Marine or the Formex Reef 39.5 mm?

At MSRP the Airain Watches Sous-Marine is the cheaper of the two at $2,050, against $2,230 for the Formex Reef 39.5 mm — a $180 gap before any retailer discounting.

Which is bigger, the Airain Watches Sous-Marine or the Formex Reef 39.5 mm?

The Formex Reef 39.5 mm wears larger at 39.5mm versus 37.5mm for the Airain Watches Sous-Marine — a 2mm difference across the dial.

Which has better water resistance, the Airain Watches Sous-Marine or the Formex Reef 39.5 mm?

The Formex Reef 39.5 mm is rated to 300m versus 200m for the Airain Watches Sous-Marine.

Which has a longer power reserve, the Airain Watches Sous-Marine or the Formex Reef 39.5 mm?

The Airain Watches Sous-Marine carries a 68-hour power reserve against 56 hours on the Formex Reef 39.5 mm.

What movement does the Airain Watches Sous-Marine run compared to the Formex Reef 39.5 mm?

Both watches run automatic movements — the Airain Watches Sous-Marine uses the La Joux-Perret G100 and the Formex Reef 39.5 mm uses the Sellita SW300-1.

Airain Watches Sous-MarinevsFormex Reef 39.5 mm

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