Since the sound and the transmission works very well. Of course, this is not surprising for Plantronics. For the headset works very well in practice for me. Although the headset is relatively heavy (it hosts indeed the Li-Ion battery) makes it very suitable wear and the possibilities for individual adjustment in height and angle of the speakers are excellent. The headset has sher already several missions while jogging successfully survived with the accompanying vibrations and contact with wetness us sweat. Another phrase for the price: for me it's worth every penny.
