I assume that you've found some sort of specs. I was surprised to see that there seems to be no model of this name on the
Coleman Powermate site; the closest I found is this 1800W model:
PM0431802.01.
The online description is remarkably vague; for instance, I can't even tell if this is a basic constant-speed unit, or an "inverter" type which only runs the engine as fast as required to meet the load demand. That makes a big difference to noise and power consumption.
One specific item provided is the brand (Subaru) of the engine used; while I have heard only good things about the small Subaru engines, I have no personal experience with them.
I wonder if the "Pulse" name is obsolete, and the Pulse 1800EX is an old model?