With the BlueAnt S4, there is no longer any need to touch your phone or car speakerphone while driving. For the first time, drivers can make and receive calls on the road using only their voice. When the phone rings you won't need to take your eyes off the road to know who is calling because the S4 will read out the caller's name or number and ask you if you want to take the call. All you have to do is say "Answer" or "Ignore"..