Which is bigger, the Sheffield SCR CHRONO SW or the Tuseno FIRST?

The Sheffield SCR CHRONO SW wears larger at 42mm versus 38mm for the Tuseno FIRST — a 4mm difference across the dial.

Which has better water resistance, the Sheffield SCR CHRONO SW or the Tuseno FIRST?

The Sheffield SCR CHRONO SW is rated to 100m versus 50m for the Tuseno FIRST.

Which has a longer power reserve, the Sheffield SCR CHRONO SW or the Tuseno FIRST?

The Sheffield SCR CHRONO SW carries a 63-hour power reserve against 40 hours on the Tuseno FIRST.

What movement does the Sheffield SCR CHRONO SW run compared to the Tuseno FIRST?

The Sheffield SCR CHRONO SW runs a automatic caliber (Sellita SW510), while the Tuseno FIRST runs a mecaquartz (Seiko VK64).

Side by side

Sheffield SCR CHRONO SWvsTuseno FIRST

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

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Sheffield SCR CHRONO SW

scr-chrono-sw

Tuseno FIRST

first-38

MSRP $449

At a glance

11 of 29 specs differ

Diameter

SCR CHRONO SW42mm

FIRST38mm

Power Reserve

SCR CHRONO SW63h

FIRST40h

Water Resistance

SCR CHRONO SW100m

FIRST50m

MSRP

SCR CHRONO SW—

FIRST$449

Full specifications

Case

6 specs

Crystal & Dial

1 specs

Dial Color

White

—

Movement

3 specs

Caliber

Sellita SW510

Seiko VK64

Type

Automatic

Mecaquartz

Power Reserve

63h

40h

Pricing

1 specs

MSRP

—

$449

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Sheffield SCR CHRONO SWvsTuseno FIRST

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