This Plantronics headset is the most comfortable fitting Bluetooth headset I have ever worn. It is light, flexible, and it can easily be forgotten after a few minutes. The fit is simply fantastic.The controls however, are very poorly designed. The on-off button is so small it takes a fingernail to depress it. The volume rocker is a little bigger, but still too small. The main call button is easier to find, but very difficult to depress. On this particular headset, I had to press extremely hard to activate the voice dial on my phone.Plantronics has a winner here in fit, but I can only give three stars due to the small buttons. I ordered one, but am returning it because it simply is too cumbersome to use.