Easy install/easy charge, good battery time.  Works well inside quiet car.  Ocasionally drops bluetooth connection for no apparent reason that I have been able to figure out yet.  I keep it in the car and use it when my wife and I are driving to have a c"conference call" with the kids or grandkids.  We can almost always hear very well on our end.  The other end ranges form good to "are you on a speakerphone, I can't understand you".  I have a Plantronics Voyager-510 which I use for private conversations which I rate as 5 stars, so the Motorola HF820 is used infrequently.  I had intended to use it as a back-up for the 510, but the 510 only ran out of battery once and that was when the power source for the charger was left off for 3 days.