I generally enjoyed my two other Samsung Bluetooth headsets. This one will not stay in the ear. Got it? Yes, the volume buttons are not very user friendly. Yes, it's too easy too redial someone with the main button. But keep in mind, this one will not stay in the ear. Three sizes of adapters; four different ears. They sound quality was sometimes questioned by the other parties on the line ("Huh?"), but more importantly, this one will not stay in the ear. Maybe we have stupid ears, but Amazon is gracious enough to let me return it post paid.