Main Features:<br /><br />Bulit-in MP3 transmitter function・ transmitting frequency can be adjusted range from 87.5 to 108 MH <br />Convenient・ reliable and easy to use <br />New style・ simple to install and remove・ occupy little car space・ no disturbing influence on driver's view<br />Safely hold your phone and other digital device against any scratches <br />Car holder suitable for iPhone 4/iPhone 4S <br />Come with two data cables for iPhone and micro USB interface supported phone・  so that easily charge your mobiledevice with this item<br /><br />                                                <br />