I have bluetooth on my Jeep and it works great. The little hole on the unit is the mic and it sort of works like speaker mode on your cell phone. The Sony has 17watts, and that's not much different than 13watts. The 50 watts is basically the loudness button, which turns on an internal amp, and adds a whole lot of distortion. Basically, it just blows out speakers. The Jensen is 40watts max, again not much difference. Anywhere near the max, and you can blow speakers less than that capacity because of the distortion that the loudness button adds to the nominal volume THD.