Which is cheaper, the Biatec T. G. Masaryk or the Seiko Prospex Sea 1970 Heritage Diver's Black Series Limited Edition?

At MSRP the Biatec T. G. Masaryk is the cheaper of the two at $2,214, against $3,300 for the Seiko Prospex Sea 1970 Heritage Diver's Black Series Limited Edition — a $1,086 gap before any retailer discounting.

Which is bigger, the Biatec T. G. Masaryk or the Seiko Prospex Sea 1970 Heritage Diver's Black Series Limited Edition?

The Seiko Prospex Sea 1970 Heritage Diver's Black Series Limited Edition wears larger at 44mm versus 40mm for the Biatec T. G. Masaryk — a 4mm difference across the dial.

Which has better water resistance, the Biatec T. G. Masaryk or the Seiko Prospex Sea 1970 Heritage Diver's Black Series Limited Edition?

The Seiko Prospex Sea 1970 Heritage Diver's Black Series Limited Edition is rated to 200m versus 100m for the Biatec T. G. Masaryk.

Which has a longer power reserve, the Biatec T. G. Masaryk or the Seiko Prospex Sea 1970 Heritage Diver's Black Series Limited Edition?

The Seiko Prospex Sea 1970 Heritage Diver's Black Series Limited Edition carries a 50-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 Sea 1970 Heritage Diver's Black Series Limited Edition?

Both watches run automatic movements — the Biatec T. G. Masaryk uses the Sellita SW200-1 and the Seiko Prospex Sea 1970 Heritage Diver's Black Series Limited Edition uses the 8L35.

Side by side

Biatec T. G. MasarykvsSeiko Prospex Sea 1970 Heritage Diver's Black Series Limited Edition

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

Seiko Prospex Sea 1970 Heritage Diver's Black Series Limited Edition

sla061j1

MSRP $3,300

At a glance

14 of 29 specs differ

Diameter

T. G. Masaryk40mm

Prospex Sea 1970 Heritage Diver's Black Series Limited Edition44mm

Power Reserve

T. G. Masaryk41h

Prospex Sea 1970 Heritage Diver's Black Series Limited Edition50h

Water Resistance

T. G. Masaryk100m

Prospex Sea 1970 Heritage Diver's Black Series Limited Edition200m

MSRP

T. G. Masaryk$2,214

Prospex Sea 1970 Heritage Diver's Black Series Limited Edition$3,300

Full specifications

Case

6 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, index(es) and bezel

Movement

3 specs

Caliber

Sellita SW200-1

8L35

Power Reserve

41h

50h

Jewels

Pricing

1 specs

MSRP

—

$3,300

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Biatec T. G. MasarykvsSeiko Prospex Sea 1970 Heritage Diver's Black Series Limited Edition

At a glance

Full specifications

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