The Bluetooth pairing with my Samsung Ativ S (Windows Phone) automatically done. Power cord plugged in, turned on, already paired. Once paired, always paired, even after switching off / on. Very nice: the Edifier will not turn on by itself, but rather remains at reception as you like.
The sound is for such a little guy pretty well, but depends very much on where it is presented. On a glass desk, he sounds almost analytically with swinging heights and zurückhaltenem Bass. Down on the wooden floor is warm and full of bass, treble resign. The sound also depends on what kind of music app to use; the differences are clearly audible. In any case, a clean, not cheap-sounding sound.
This box uses Bluetooth version 2.1. NFC does not exist (which in this case?). The frequency is not - as indicated here on Amazon - 40Hz-20kHz, but according to the attached specifications 72Hz-20kHz, but what is also a good value for such a box.
Go I would not buy me. It is, in my opinion, a prima Schreibtischtäter with the option of being able to be taken in case of power failure in operation by batteries. Or just time to get out on the balcony or in the garden. Because of the size, open Basstubus and total lack of waterproofing not the best choice as flexible Takeaway solution.
Supplement: At first did not work the way for using speakerphone. The music was indeed gone down, the conversation could be take with the answer button, but unfortunately the conversation has not been transferred, so you hear nothing. How me a Samsung employee explained, the Bluetooth protocol of my Samsung Ativ S would not generally supported by the Bluetooth speakers. But how strange 24 hours volunteered on my cell phone an update from Samsung on which I installed. Since then, the handsfree connection to Edifier works fine. The sound of the phone is loud and clear.