Which is cheaper, the Airain Watches Sous-Marine or the Biatec T. G. Masaryk?

At MSRP the Airain Watches Sous-Marine is the cheaper of the two at $2,050, against $2,214 for the Biatec T. G. Masaryk — a $164 gap before any retailer discounting.

Which is bigger, the Airain Watches Sous-Marine or the Biatec T. G. Masaryk?

The Biatec T. G. Masaryk wears larger at 40mm versus 37.5mm for the Airain Watches Sous-Marine — a 2.5mm difference across the dial.

Which has better water resistance, the Airain Watches Sous-Marine or the Biatec T. G. Masaryk?

The Airain Watches Sous-Marine is rated to 200m versus 100m for the Biatec T. G. Masaryk.

Which has a longer power reserve, the Airain Watches Sous-Marine or the Biatec T. G. Masaryk?

The Airain Watches Sous-Marine carries a 68-hour power reserve against 41 hours on the Biatec T. G. Masaryk.

What movement does the Airain Watches Sous-Marine run compared to the Biatec T. G. Masaryk?

Both watches run automatic movements — the Airain Watches Sous-Marine uses the La Joux-Perret G100 and the Biatec T. G. Masaryk uses the Sellita SW200-1.

Side by side

Airain Watches Sous-MarinevsBiatec T. G. Masaryk

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

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Airain Watches Sous-Marine

MSRP $2,050

Biatec T. G. Masaryk

MSRP $2,214

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At a glance

10 of 29 specs differ

Diameter

Sous-Marine37.5mm

T. G. Masaryk40mm

Power Reserve

Sous-Marine68h

T. G. Masaryk41h

Water Resistance

Sous-Marine200m

T. G. Masaryk100m

MSRP

Sous-Marine$2,050

T. G. Masaryk$2,214

Full specifications

Case

5 specs

Diameter

37.5mm

40mm

Thickness

10.45mm

11.15mm

Lug-to-Lug

48.2mm

48mm

Material

Stainless Steel

316L Stainless Steel

Water Resistance

200m

100m

Crystal & Dial

2 specs

Dial Color

Black

Beige

Lume

Super-LumiNova C3

None

Movement

2 specs

Caliber

La Joux-Perret G100

Sellita SW200-1

Power Reserve

68h

41h

Pricing

1 specs

MSRP

$2,050

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