Yes, it's a real transformer
I bought this specifically to run a 120V tungsten grinder off the same 240V power as my arc welder.  The grinder is rated at 1 amp, so the power ratings are perfect.  Since this is an actual step-down transformer, I see no problems for my application.  It weighs about 1.5 lbs so this might not be so great if you're using it for travel and packing ultra-light but it does its job very well.  Amazon's review asked for a "drying power" rating which is grossly inappropriate for this 200W unit.  It will run your small appliances fine but NOT a 2KW blow dryer!  Silly Amazon...
Rating: 5 stars