[TenTec] Best Headphones?

[John Nason]

Powers the electronics that perform the noise
cancelling process.  Works without battery as ordinary
headphones.

--- Barry Gross <barry.n1eu at gmail.com> wrote:

> On 12/28/05, Robert & Linda McGraw K4TAX
> <RMcGraw at blomand.net> wrote:
> >
> > I see that the package indicates that 1  AAA
> battery required {not
> > included}.
> >
> What's the battery for?
> 
> 
> noise cancelling electronics
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