Which is cheaper, the Biatec T. G. Masaryk or the Seiko Prospex SPEEDTIMER Mechanical Chronograph?

At MSRP the Biatec T. G. Masaryk is the cheaper of the two at $2,214, against $2,500 for the Seiko Prospex SPEEDTIMER Mechanical Chronograph — a $286 gap before any retailer discounting.

Which is bigger, the Biatec T. G. Masaryk or the Seiko Prospex SPEEDTIMER Mechanical Chronograph?

The Seiko Prospex SPEEDTIMER Mechanical Chronograph wears larger at 42mm versus 40mm for the Biatec T. G. Masaryk — a 2mm difference across the dial.

Which has better water resistance, the Biatec T. G. Masaryk or the Seiko Prospex SPEEDTIMER Mechanical Chronograph?

The Biatec T. G. Masaryk is rated to 100m versus 10m for the Seiko Prospex SPEEDTIMER Mechanical Chronograph.

Which has a longer power reserve, the Biatec T. G. Masaryk or the Seiko Prospex SPEEDTIMER Mechanical Chronograph?

The Seiko Prospex SPEEDTIMER Mechanical Chronograph carries a 45-hour power reserve against 41 hours on the Biatec T. G. Masaryk.

What movement does the Biatec T. G. Masaryk run compared to the Seiko Prospex SPEEDTIMER Mechanical Chronograph?

Both watches run automatic movements — the Biatec T. G. Masaryk uses the Sellita SW200-1 and the Seiko Prospex SPEEDTIMER Mechanical Chronograph uses the 8R48.

Side by side

Biatec T. G. MasarykvsSeiko Prospex SPEEDTIMER Mechanical Chronograph

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

Add a watch

Biatec T. G. Masaryk

MSRP $2,214

Seiko Prospex SPEEDTIMER Mechanical Chronograph

srq047j1

MSRP $2,500

At a glance

13 of 29 specs differ

Diameter

T. G. Masaryk40mm

Prospex SPEEDTIMER Mechanical Chronograph42mm

Power Reserve

T. G. Masaryk41h

Prospex SPEEDTIMER Mechanical Chronograph45h

Water Resistance

T. G. Masaryk100m

Prospex SPEEDTIMER Mechanical Chronograph100m

MSRP

T. G. Masaryk$2,214

Prospex SPEEDTIMER Mechanical Chronograph$2,500

Full specifications

Case

5 specs

Crystal & Dial

4 specs

Crystal Shape

Flat

Curved

AR Coating

Inner

Anti-reflective coating on inner surface

Dial Color

Beige

Black

Lume

None

LumiBrite on hands and index(es)

Movement

3 specs

Caliber

Sellita SW200-1

8R48

Power Reserve

41h

45h

Jewels

Pricing

1 specs

MSRP

—

$2,500

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Biatec T. G. MasarykvsSeiko Prospex SPEEDTIMER Mechanical Chronograph

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