they all have watch batteries in them, its what powers bulk of the remote. The battery powers the transmitter mainly. Possible what they really did was boost the receiver so the weak signal the watch battery puts out is picked up

Hmm, so the receiver in the media player uses a little more electricity, then?

Mp3 players use ridiculously tiny amounts of electricity. Especially ones that don't have full lcd screens and whatnot (ie: the kind that would actually take batteries and not have them built-in). I had this tiny, generic mp3 player for years that ran off a single AAA battery. Never had to change it once.

But mp3 players in general basically use jack shit. The screen is their primary power draw. Playing music off of headphones uses tiny amounts of electricity because, being RIGHT in your ear, the sounds they make are so very quiet that it doesn't require much power at all to produce.


I mean, you have your people who play their music at ridiculous volumes on their headphones, but they are morons and therefore don't count.