I would have almost bought this nice wireless headphones I've tested at MM. From the sound I was excited, even though I was not able to test Dolby Digital. But what has kept me from buying, is the fact that the battery is installed firmly, that in case a battery defect of headphones Sony would have to be returned, which would mean that one is probably for weeks without headphones, and this will not be cheap with security.
This situation angers me and is not comprehensible. I had fully expected that standard AAA batteries are integrated such as Sennheiser.
It may be that the one or the other does not bother me but this is an absolute no-go! Therefore I can not guarantee buy recommendation.