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A lot of background noise captured from mic and caller ...
on 9 April 2018
A lot of background noise captured from mic and caller sound is not very clear to another end, as it is claimed. And most important things is that There is no Apt-x technology. Please see the detail of this chip Bluetooth 4.1 CSR8635, And also apt-x technology does not mention in the box or in documents provided. Sound quality is ok.