I bought this bluetooth after using another model of Plantronics bluetooth to death. I liked it a lot but it was a little bulky so I went for a slimmer model this time; the Explorer 330. FORGET IT! It won't stay in my ear. It makes my ear so sore that I can hardly force myself to wear it (I have to have it for my job) and if I get four feet away from my cell, I get static. I'm VERY disappointed with this model and will be returning it.