Which is cheaper, the Seagull Day-date Calendar Tonneau Watch or the Sternglas Tachymeter?

At MSRP the Sternglas Tachymeter is the cheaper of the two at $312, against $539 for the Seagull Day-date Calendar Tonneau Watch — a $227 gap before any retailer discounting.

Which is bigger, the Seagull Day-date Calendar Tonneau Watch or the Sternglas Tachymeter?

The Sternglas Tachymeter wears larger at 42mm versus 36mm for the Seagull Day-date Calendar Tonneau Watch — a 6mm difference across the dial.

What movement does the Seagull Day-date Calendar Tonneau Watch run compared to the Sternglas Tachymeter?

The Seagull Day-date Calendar Tonneau Watch runs a automatic caliber (ST2100), while the Sternglas Tachymeter runs a quartz (Miyota OS20).

Side by side

Seagull Day-date Calendar Tonneau WatchvsSternglas Tachymeter

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

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Seagull Day-date Calendar Tonneau Watch

1051ag

MSRP $539

See the full Day-date Calendar Tonneau Watch

Sternglas Tachymeter

MSRP $312

See the full Tachymeter

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At a glance

11 of 29 specs differ

Diameter

Day-date Calendar Tonneau Watch36mm

Tachymeter42mm

Power Reserve

Day-date Calendar Tonneau Watch—

Tachymeter—

Water Resistance

Day-date Calendar Tonneau Watch50m

Tachymeter50m

MSRP

Day-date Calendar Tonneau Watch$539

Tachymeter$312

Full specifications

Case

5 specs

Crystal & Dial

1 specs

Dial Color

—

Movement

4 specs

Caliber

ST2100

Miyota OS20

Type

Automatic

Quartz

Power Reserve

—

Jewels

—

Pricing

1 specs

MSRP

$539

$312

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