You can tune out the interference from the Pro Pointer or someone elses PI you may be hunting near.
http://www.garrett.com/hobbysite/hbby_infinium_introduction.aspx
http://www.garrett.com/hobbysite/hbby_infinium_video.aspx
http://www.garrett.com/hobbysite/hbby_infinium_techniques.aspx
http://www.garrett.com/hobbysite/hbby_infinium_closing.aspx
http://www.garrett.com/hobbysite/hbby_infinium_introduction.aspx
http://www.garrett.com/hobbysite/hbby_infinium_video.aspx
http://www.garrett.com/hobbysite/hbby_infinium_techniques.aspx
http://www.garrett.com/hobbysite/hbby_infinium_closing.aspx