[jamesrcole]

I don't think the consumer cares about such duplication (indirectly, they will, if it makes the headphones cost more, though I think that cost will go down over time).

An advantage I didn't mention in my original comment is: getting rid of cables. Personally, I hate headphone cables. They seem to always be getting tangled up when the headphones aren't in use (meaning I have to mess around untangling them before using them), and always caught on things while I'm wearing them.

[dragonwriter]

> I don't think the consumer cares about such duplication

Aside from cost, more devices that need to be charged creates more overhead.

[jamesrcole]

It's cost vs benefit. Obviously there's differences of opinions on the costs vs benefits, but I'm of the view that the benefits of wireless outweigh the costs of charging the headphones.