After a negative review because of a lack of manual, I have certainly ordered me this part. I was able without manual to see the power button and push it. Behold, immediately begins searching for Bluetooothgeräten. Since I can use my smartphone without a manual, I turned there a Bluetooth. Bestätiging and that's it. Why should there be a difference, do not open up to me at Android or I-Phone. Bluetooth is Bluetooth. Headphones reingestöpselt, then regulate smartphone volume to maximum and the Sony SBH as required. The sound is of course not "200 euros headphones' sound, but adequate. After snacked the integrated radio. Again, no manual radio icon recognized and sought a transmitter. Press as a normal radio simply plus or minus. Press briefly, only frequency change in increments of 1. Press for more, next station. Super reception, of course, only with connected headphones or Lautprechern. Because I want to use only one device so that, I have no problems with it. Everything as desired and expected. By the way my first Sony device (apart from 2 old mobile phones). So who necessarily a guide needs to download. However, it will need the least. A minus point anyway, If man wants to use the clip to attach the garment, you press when you are not careful, the middle button.