Which is cheaper, the Seaholm Flats Chronograph or the Sinn U2 S (EZM 5)?

At MSRP the Seaholm Flats Chronograph is the cheaper of the two at $3,495, against $3,802 for the Sinn U2 S (EZM 5) — a $307 gap before any retailer discounting.

Which is bigger, the Seaholm Flats Chronograph or the Sinn U2 S (EZM 5)?

The Sinn U2 S (EZM 5) wears larger at 44mm versus 41mm for the Seaholm Flats Chronograph — a 3mm difference across the dial.

Which has better water resistance, the Seaholm Flats Chronograph or the Sinn U2 S (EZM 5)?

The Sinn U2 S (EZM 5) is rated to 2000m versus 200m for the Seaholm Flats Chronograph.

Which has a longer power reserve, the Seaholm Flats Chronograph or the Sinn U2 S (EZM 5)?

The Sinn U2 S (EZM 5) carries a 48-hour power reserve against 42 hours on the Seaholm Flats Chronograph.

What movement does the Seaholm Flats Chronograph run compared to the Sinn U2 S (EZM 5)?

Both watches run automatic movements — the Seaholm Flats Chronograph uses the ETA 2894-2 and the Sinn U2 S (EZM 5) uses the Sellita SW330-2.

Side by side

Seaholm Flats ChronographvsSinn U2 S (EZM 5)

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

Add a watch

Seaholm Flats Chronograph

MSRP $3,495

See the full Flats Chronograph

Sinn U2 S (EZM 5)

U2 S (EZM 5)

MSRP $3,802

See the full U2 S (EZM 5)

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At a glance

18 of 29 specs differ

Diameter

Flats Chronograph41mm

U2 S (EZM 5)44mm

Power Reserve

Flats Chronograph42h

U2 S (EZM 5)48h

Water Resistance

Flats Chronograph200m

U2 S (EZM 5)2,000m

MSRP

Flats Chronograph$3,495

U2 S (EZM 5)$3,802

Full specifications

Case

7 specs

Crystal & Dial

5 specs

Crystal Shape

—

AR Coating

—

Underside

Dial Color

Tan

Black

Indices

—

Lume

None

Luminescent

Movement

5 specs

Caliber

ETA 2894-2

Sellita SW330-2

Beat Rate

0 vph

28,800 vph

Power Reserve

42h

48h

Jewels

Complications

None

GMT, Date

Pricing

1 specs

MSRP

$3,495

$3,802

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Seaholm Flats ChronographvsSinn U2 S (EZM 5)

At a glance

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