Which is bigger, the Impossible Watch Company IMP TIME-ONLY or the Spinnaker Dumas GMT?

The Spinnaker Dumas GMT wears larger at 44mm versus 38.5mm for the Impossible Watch Company IMP TIME-ONLY — a 5.5mm difference across the dial.

Which has better water resistance, the Impossible Watch Company IMP TIME-ONLY or the Spinnaker Dumas GMT?

The Spinnaker Dumas GMT is rated to 300m versus 50m for the Impossible Watch Company IMP TIME-ONLY.

Which has a longer power reserve, the Impossible Watch Company IMP TIME-ONLY or the Spinnaker Dumas GMT?

The Impossible Watch Company IMP TIME-ONLY carries a 42-hour power reserve against 40 hours on the Spinnaker Dumas GMT.

What movement does the Impossible Watch Company IMP TIME-ONLY run compared to the Spinnaker Dumas GMT?

Both watches run automatic movements — the Impossible Watch Company IMP TIME-ONLY uses the Miyota 82S0 and the Spinnaker Dumas GMT uses the Seiko NH34A.

Side by side

Impossible Watch Company IMP TIME-ONLYvsSpinnaker Dumas GMT

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

Impossible Watch Company IMP TIME-ONLY

Spinnaker Dumas GMT

dumas-gmt-automatic-ocean-blue-sp-5119-55

MSRP $399

At a glance

12 of 29 specs differ

Diameter

IMP TIME-ONLY38.5mm

Dumas GMT44mm

Power Reserve

IMP TIME-ONLY42h

Dumas GMT40h

Water Resistance

IMP TIME-ONLY50m

Dumas GMT300m

MSRP

IMP TIME-ONLY—

Dumas GMT$399

Full specifications

Case

7 specs

Crystal & Dial

2 specs

Crystal

Sapphire

Dial Color

Salmon

Blue

Movement

2 specs

Caliber

Miyota 82S0

Seiko NH34A

Power Reserve

42h

40h

Pricing

1 specs

MSRP

—

$399

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