Which is cheaper, the Seagull Day-date Calendar Tonneau Watch or the Trematic ZY6?

At MSRP the Seagull Day-date Calendar Tonneau Watch is the cheaper of the two at $539, against $855 for the Trematic ZY6 — a $316 gap before any retailer discounting.

Which is bigger, the Seagull Day-date Calendar Tonneau Watch or the Trematic ZY6?

The Trematic ZY6 wears larger at 38mm versus 36mm for the Seagull Day-date Calendar Tonneau Watch — a 2mm difference across the dial.

Which has better water resistance, the Seagull Day-date Calendar Tonneau Watch or the Trematic ZY6?

The Trematic ZY6 is rated to 100m versus 50m for the Seagull Day-date Calendar Tonneau Watch.

What movement does the Seagull Day-date Calendar Tonneau Watch run compared to the Trematic ZY6?

Both watches run automatic movements — the Seagull Day-date Calendar Tonneau Watch uses the ST2100 and the Trematic ZY6 uses the Sellita SW200-1.

Side by side

Seagull Day-date Calendar Tonneau WatchvsTrematic ZY6

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

Add a watch

Seagull Day-date Calendar Tonneau Watch

1051ag

MSRP $539

See the full Day-date Calendar Tonneau Watch

Trematic ZY6

zy6

MSRP $855

Some links are affiliate links — lug2lug may earn a commission at no extra cost to you. Disclosures

At a glance

9 of 29 specs differ

Diameter

Day-date Calendar Tonneau Watch36mm

ZY638mm

Power Reserve

Day-date Calendar Tonneau Watch—

ZY641h

Water Resistance

Day-date Calendar Tonneau Watch50m

ZY6100m

MSRP

Day-date Calendar Tonneau Watch$539

ZY6$855

Full specifications

Case

5 specs

Diameter

36mm

38mm

Thickness

12mm

11.1mm

Lug-to-Lug

40mm

44mm

Lug Width

11mm

20mm

Water Resistance

50m

100m

Crystal & Dial

1 specs

Dial Color

—

Movement

2 specs

Caliber

ST2100

Sellita SW200-1

Power Reserve

41h

Pricing

1 specs

MSRP

$539

$855

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.

Loriermicro

DiscussionNot started

Adjacent matchups

People also compared

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

Seagull Tonneau Case Day-date Calendar Watch 34mmvsTrematic ZY6 Seagull Gray TV Dial Snowflake Texture Tonneau Case Watch 36mmvsTrematic ZY6 Seagull Brushed Solid-color Dial Vintage Tonneau Dress Watch 30mmvsTrematic ZY6 Maen Grand Tonneau Ultra ThinvsTrematic ZY6 DuFrane Watches Mabry MkII 39mm Titanium Mechanical Field WatchvsSeagull Day-date Calendar Tonneau Watch DuFrane Watches Travis 39mm MkII Mechanical Diving WatchvsSeagull Day-date Calendar Tonneau Watch

Edit this comparison Add another watch Explore more 35–39mm watches

Seagull Day-date Calendar Tonneau WatchvsTrematic ZY6

At a glance

Full specifications

More watches worth a look

Zephyr

Colibri 2

Manhattan 37 seconde/seconde/

Waterloo 39mm Mechanical Sporty Dress Watch

Travis 39mm MkII Mechanical Diving Watch

C-02 BRI MARSEILLE

Islander Astoria Automatic Dress Watch with Pale Blue Dial #ISL-263

C-02 Police Nationale

People also compared