The idea is that the alloy has no heat capacity at all and transfers
all the energy given to it immediately. That resulting in fast results
and no losses. They claim that in a well insulated house the real
consumption is only 20% of the time the heating is turned on. So if you
are running it for 10 hours a day, the consumption would only 2 hrs
worth.

Also, the increased heat transfer area ensures more even heating.

Just adding what I have heard from the distributor and read from
marketing docs. No real experience with the material.