I would NOT purchase this product off of the internet.  I ordered one, recieved it, and it wouldn't even register that it was charging, so I didn't get to test it.  I called Amazon, and they were great.  The representative was kind and he quickly sent me a replacement item overnight.  I opened that one up and it did charge.  I had some trouble pairing it with my phone, but it did eventually do that.  Then I tried to use it.  When I put it in the "on" position, it turned off.  When I put it in the "off" position, it turned on.  I even took it to a brick and mortar store to make sure I wasn't missing something.  I did purchase one from that store, the H710, the next model up, and I have to say that I do like it.  It works great and is very comfortable on my ear.  There also seems to be a bit of a quality discrepency between the two virtually identical items.