What is the metric unit for a stopwatch?

Answer 1

There are many things about a stopwatch that you can measure.

You might want to know the mass, weight, diameter, thickness,

temperature, conductivity, or cost of the stopwatch, and they all

have different units.

Of course, the stopwatch itself measures time, and the unit of THAT

is the second, in both SI and US Customary units.

Answer 2

seconds duh