I have tried 6 different bluetooth headsets and the one thing I hate about all of them is they are not loud enough.  I always find myself pressing the headset against me ear to hear so I end up not using them because I can just put my phone up against my ear.  This headset goes into your ear like an earbud and is louder than I need.  I actually have to turn this one down a little bit.  Beware of fake clone models from Hong Kong.  There are several websites that help you find the difference between them.  Even some Sprint stores were selling these.  If you get one of those you will be disappointed.  The easiest way to tell if you have one of them is if the LED doesn't change to blue after the charge is complete.