Time and Stopwatch Object

I think if you look at new Date you actually get an object. If you then do maths with that object, Date.valueOf gets called, which returns a time in milliseconds since 1970...

>new Date()
={ "ms": 949363214047.21643066406 }
>0+(new Date())                                                                 
=949363248128.48754882812  

So yes, the time returned by SWstop will be milliseconds.

Hope that helps :)