Contrary to the other review, I have had good experience with H9. I have owned over the years a total of 5 bluetooth headset. I would rank this one second to the best one I own. Some people will find it difficult to get the unit to stay comfortably in the ear canal. With some patience, you will be able to find one of the included attachments that will fit right. Although, do not expect to be running and jumping with the unit inside your ear as it would not stay in place. Another draw back is that you NEED to use the included base to charge the unit--the unit cannot be charge any other way.