On Sun, 17 Sep 2006 14:03:36 +0200, Thomas Borchert
wrote:

B,

Do they automatically power off, or will it kill the batteries if you
stow the headset and leave the ANR on?


Lightspeed invented (and patented, they say) that features. All their
headsets have it.

Bose Headset X shuts off automatically as well, together with a
plethora of other consumer electronics I can think of. I doubt any
patent challenge for a device that turns itself off after a period of
inactivity would stand up to any scrutiny.