This kit does exactly what is asked, no need to get my Z Ultra, be it for calls, music, where even the sms, I do all my kit and since such remains warm.
Regarding the quality of the speaker, do not ask the world eh, but for what is his strong play when I'm in mp3 mode for hands-free speakers in fashion could do better eh .. .
Anyway this little Bluetooth kit plays its role perfectly I can not do without me, and I heartily recommend