Incredibly, I would say I have owned over 20 different Bluetooth headsets. Hard to believe but since I drive a Tractor Trailer Semi for a living I ended up going through most of those simply because they all had some sort of major flaw. Having a Bluetooth headset that was reliable, well made, had quality sound, was loud enough to hear in any environment (window and loud diesel engine noise), and had long battery life is extremely important to me. A headset with all of these qualities allowed me to run my business while driving 11 hours per day and most importantly safer while doing so. Although considered bulky and not necessarily the most esthetically pleasing by some people, this headset is by far the best I've owned out of all 20 or so. It is comfortable to wear for hours at a time. It pairs nicely with the many cell phones I have owned of all different brands. It is loud when I need it to be and has a long battery life. Another thing, this is a very solid, well made unit as well, and don't neglect this when you buy a headset. Some are finished with a small drop or a pinch in your pocket. I've owned many of the newest tiny "attractive" headsets and they break, you can't hear them on the loudest setting and they often left me with a sore ear within an hour or less. I recommend that you don't spend any more than this on your headset. I purchased some that were $100+ and they disappointed and I no longer use them or they broke. This is my second one of this exact model. My puppy actually chewed the first one, but I had to order from Amazon as soon as possible as I rely on it too much and conduct much of my business over the phone while driving or writing. To make a long story short: I wished I had this review handed to me before I spent a gazillion dollars on headsets that I either broke or just had some horrible flaw. I hope this helps you out even if you are a seasoned Bluetooth person or new to the technology. If there were one thing I miss that this headset doesn't have it would be the vibrate feature that one of my other headsets had (I loved this). Can't get everything I guess.