Which is cheaper, the Aera Instruments C-1 or the Biatec T. G. Masaryk?

At MSRP the Aera Instruments C-1 is the cheaper of the two at $2,200, against $2,214 for the Biatec T. G. Masaryk — a $14 gap before any retailer discounting.

Which is bigger, the Aera Instruments C-1 or the Biatec T. G. Masaryk?

The Aera Instruments C-1 wears larger at 42mm versus 40mm for the Biatec T. G. Masaryk — a 2mm difference across the dial.

Which has a longer power reserve, the Aera Instruments C-1 or the Biatec T. G. Masaryk?

The Aera Instruments C-1 carries a 56-hour power reserve against 41 hours on the Biatec T. G. Masaryk.

What movement does the Aera Instruments C-1 run compared to the Biatec T. G. Masaryk?

Both watches run automatic movements — the Aera Instruments C-1 uses the SW510 BH B and the Biatec T. G. Masaryk uses the Sellita SW200-1.

Side by side

Aera Instruments C-1vsBiatec T. G. Masaryk

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

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Aera Instruments C-1

MSRP $2,200

Biatec T. G. Masaryk

MSRP $2,214

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Buy from Biatec ↗

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At a glance

10 of 29 specs differ

Diameter

C-142mm

T. G. Masaryk40mm

Power Reserve

C-156h

T. G. Masaryk41h

Water Resistance

C-1100m

T. G. Masaryk100m

MSRP

C-1$2,200

T. G. Masaryk$2,214

Full specifications

Case

5 specs

Diameter

42mm

40mm

Thickness

15.75mm

11.15mm

Lug-to-Lug

49.55mm

48mm

Lug Width

22mm

20mm

Material

Stainless Steel

316L Stainless Steel

Crystal & Dial

1 specs

Dial Color

Cloud

Beige

Movement

3 specs

Caliber

SW510 BH B

Sellita SW200-1

Power Reserve

56h

41h

Jewels

Pricing

1 specs

MSRP

$2,200

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Aera Instruments C-1vsBiatec T. G. Masaryk

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