UPDATE January 2009/ My Voyager 510 seems to be unbreakable - after about three years of constant use and abuse, this headset survived the ultimate challenge - full washer and dryer cycle in my shirt pocket!  My wife found it after the fact when she was folding dry clothes.  It had both red and blue LED on and we thought it died.  Next day after the lights disappeared, I tried charging it and it was showing the flashing blue light like it was connected but it wouldn't react to anything or show any signs of life.  Not knowing it was in a "coma" and thinking it was dead, I bought the new Discovery 925 set.  Two weeks later, after returning from vacation I was ready to throw away the good old "mule", but I tried it one more time just for the heck of it, because of my great experience and confidence in Plantronics products. Before charging it I sprayed a little bit of WD-40 on the power/mute, volume and call buttons, jiggled them a bit, wiped it off and charged it again.  This time everything worked and I was able to pair it with my phone and a week later, this old faithful, one-in-a-thousand Plantronics headset still works as good as new, and it seems it might give me a few more years of service.  Amazing! /UPDATE