First, let me say that I really like this head set. It is very effective at cutting ambient noise, even when driving on the freeway with the windows down. It fits very well and snug. Once you understand that you need to slip the loop over your ear (position the gap between the loop end and the headset over the top corner of your ear, where it joins your head, and then slide down), it is very easy to put it on.Major flaws:- the earloop will break. The rod that goes into the hole on the headset is flimsy plastic and it cannot take the stress of regular normal use. Put it in your pocket (and I am not talking about your back pocket) and one day, soon, you will pull it out in two pieces. They could have mitigated this problem with using some malleable alloy, especially those that have 'memory' that will allow it to bend but spring back into shape.- the charger cable - for some inane reason (more likely, financial gain opportunity), the USB cable has a proprietary interface to the headset where a straight forward mini-USB interface would have just as easily worked. I earlier had the Motorola H700 and the Blackberry combination, switching away from other headsets and phones, precisely because they both charged with standard mini-USB cables and enabled me to cut down on the number of cables I had to have.Minor gripes:- while the incorporation of the buttons into the body of the headset itself is very artful, when you are wearing the headset, it takes some feeling around, over flat surfaces, to make sure you are pressing the right button. I have found myself pressing the top button when trying to answer calls, or worse, pressing too low on the headset. It also requires a tad too much effort to depress the button - you have to literally push it into your face/cheek.If the two major flaws had been absent, this product would have been awesome and imo, THE best choice in bluetooth headsets.