This convenient headset is ideal for people who do not like or tolerate an in-ear headphones. He has a very powerful and relatively balanced sound, just as you would generally knows of Sennheiser headphones. I use it for my hands-free to an iPhone under my various motorcycle helmets. The intelligibility when telephoning is given even in (slower) ride and I can, if the situation allows, listen to music while driving. By not closed type I get anyway with enough outside noise, so I can follow the traffic. And the whole thing at such a price ...!