I drive a tractor trailer for a large shipping company (a 2005 Kenworth T800) and needed a headset to use while at work. I tried a Motorola HS801 and HS850, but found they were not loud enough to hear in the high ambient noise environment of a semi-truck.The BT250v has a noise cancelling microphone, which effectively keeps the conversation quiet for whom I'm talking to, and the in the ear design insures I can hear every word being spoken to me. I am really impressed with this headset, I drive 2500 miles every week, the long battery life is great and it's comfortable enough to leave on your ear all day.