One star deduction for the non-existent Kompitabilität with my Samsung Galaxy Tab 3. Although it was but a coupling shown a Bluetooth connection still failed to materialize!
On the contrary, on various mobile phones, where a good connection is established immediately.
I am no longer the techie of the then still tried everything possible at my age. Either it works, or it's back!
Only I do not want to make the product down here. The value for money is great and the sound via cable for few euros perfectly adequate!
I'll try again with Sennheiser, as more and everything has to work now.