Which is cheaper, the Biatec T. G. Masaryk or the Sheffield Deep Gray 300?

At MSRP the Biatec T. G. Masaryk is the cheaper of the two at $2,214, against $258 for the Sheffield Deep Gray 300 — a $1,956 gap before any retailer discounting.

Which is bigger, the Biatec T. G. Masaryk or the Sheffield Deep Gray 300?

The Sheffield Deep Gray 300 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 Sheffield Deep Gray 300?

The Sheffield Deep Gray 300 is rated to 300m versus 100m for the Biatec T. G. Masaryk.

Which has a longer power reserve, the Biatec T. G. Masaryk or the Sheffield Deep Gray 300?

The Biatec T. G. Masaryk carries a 41-hour power reserve against 40 hours on the Sheffield Deep Gray 300.

What movement does the Biatec T. G. Masaryk run compared to the Sheffield Deep Gray 300?

Both watches run automatic movements — the Biatec T. G. Masaryk uses the Sellita SW200-1 and the Sheffield Deep Gray 300 uses the Seiko NH35.

Side by side

Biatec T. G. MasarykvsSheffield Deep Gray 300

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

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Biatec T. G. Masaryk

MSRP $2,214

Sheffield Deep Gray 300

deep-gray-300

MSRP $258

At a glance

10 of 29 specs differ

Diameter

T. G. Masaryk40mm

Deep Gray 30042mm

Power Reserve

T. G. Masaryk41h

Deep Gray 30040h

Water Resistance

T. G. Masaryk100m

Deep Gray 300300m

MSRP

T. G. Masaryk$2,214

Deep Gray 300$258

Full specifications

Case

6 specs

Diameter

40mm

42mm

Thickness

11.15mm

13.8mm

Lug-to-Lug

48mm

52mm

Lug Width

20mm

22mm

Material

316L Stainless Steel

Stainless Steel

Water Resistance

100m

300m

Crystal & Dial

1 specs

Dial Color

Beige

—

Movement

2 specs

Caliber

Sellita SW200-1

Seiko NH35

Power Reserve

41h

40h

Pricing

1 specs

MSRP

—

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Biatec T. G. MasarykvsSheffield Deep Gray 300

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