I've bought two of these locally and both were D.O.A. with the same problem. The chargers on both were non-functional. Maybe the retailer got a bad lot, I don't know but two picked at random, from different stores is no coincidence.
I'll never know
D.O.A; Also, it's obvious that SONY intends for this, and I suspect all their current wireless headsets, to be throw away items when the batteries die; The owner's instructions says to ask your retailer what to do when the batteries die or to take the product to a SONY store.