Which is cheaper, the Biatec T. G. Masaryk or the Seiko 62MAS?

At MSRP the Seiko 62MAS is the cheaper of the two at $1,200, against $2,214 for the Biatec T. G. Masaryk — a $1,014 gap before any retailer discounting.

Which is bigger, the Biatec T. G. Masaryk or the Seiko 62MAS?

The Seiko 62MAS wears larger at 40.5mm versus 40mm for the Biatec T. G. Masaryk — a 0.5mm difference across the dial.

Which has better water resistance, the Biatec T. G. Masaryk or the Seiko 62MAS?

The Seiko 62MAS 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 62MAS?

The Seiko 62MAS carries a 70-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 62MAS?

Both watches run automatic movements — the Biatec T. G. Masaryk uses the Sellita SW200-1 and the Seiko 62MAS uses the 6R35.

Side by side

Biatec T. G. MasarykvsSeiko 62MAS

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 62MAS

spb143j1

MSRP $1,200

At a glance

14 of 29 specs differ

Diameter

T. G. Masaryk40mm

62MAS40.5mm

Power Reserve

T. G. Masaryk41h

62MAS70h

Water Resistance

T. G. Masaryk100m

62MAS200m

MSRP

T. G. Masaryk$2,214

62MAS$1,200

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

6R35

Power Reserve

41h

70h

Jewels

Pricing

1 specs

MSRP

—

$1,200

Keep exploring

More watches worth a look

Matched to the watches above on size, movement, style and price — microbrands first. Open any one to dig in.

Feynman Timekeepersmicro

Follow this matchup

Get a note when Biatec T. G. Masaryk vs Seiko 62MAS gets more votes, a community discussion, or a price drop. No account needed.

Adjacent matchups

People also compared

Comparisons nearby in the catalog — alternatives to the watches above paired against the matchup.

Feynman Timekeepers CoalescevsSeiko 62MAS Maen Manhattan 37 IFL EditionvsSeiko 62MAS Beaufort Permian RiftvsSeiko 62MAS Lucky Harvey Chiming HorsevsSeiko 62MAS Biatec T. G. MasarykvsGeckota Sea-Hunter Dive Watch Biatec T. G. MasarykvsWolbrook Skindiver II Professional

Edit this comparison Add another watch Explore more 39–42mm watches

Biatec T. G. MasarykvsSeiko 62MAS

At a glance

Full specifications

More watches worth a look

Coalesce

Sea-Hunter Dive Watch

Manhattan 37 IFL Edition

Skindiver II Professional

Permian Rift

Diver

Chiming Horse

Skin Diver CMM.20

Follow this matchup

People also compared