I have have purchased and used four other name brand bluetooth headsets from other dealers. After checking out the Plantronics unit I ordered two of them, one for me and one for my wife, . This is the first Bluetooth unit that has fit my large ears and allowed the speaker into the ear-hole without pain, loss of sound or falling off my ear all the time. Even works on my wife's small ears. Had my Plantronics unit's on/off button stop working and unit was replaced right away (within 2 days). Great service from amazon.com