Lifted

Been shopping in London today. Quite an eye opener.
I see you can now get wireless bras.
As a technophobe I must say I'm struggling with this concept. Does it mean you plug it into a central dock somewhere in the house and then benefit from its uplifting effects in any room with the appropriate equipment? Like those whizzy new music systems?
Or does it date back to a more innocent age of valves and Bakelite. Can you listen to the Home Service and the Light programme on it?
It's a mystery.