While I will agree that the device works as advertised and the sound quality is pretty decent this headset has caused me more heartache in annoyances to outweigh any benefit.  If you buy this be prepared for the device to turn on and off at very in opportune times.....  but if you want to turn it off, thats a whole different story.  Powering the device on and off requires holding the button down for a certain period of time but the problem is that the time required seems to change each time you do it.  Add to this that holding the button down for a period of time shorter than the period of time required to turn it off is actually a redial function.  I have FREQUENTLY called someone just by trying to turn off the device.  The button is also entirely too sensitive.  I've had the device in my cargo pants pocket (where this would be very little pressure on the device) and the unit has turned on and actually called someone.