The Uniden R7 Extreme Long-Range Laser Radar Detector with GPS and Threat Direction is top of the line. With the R7, you can mark geographical points where you commonly encounter radar transmissions. These can be school zones, red light cameras and places where police frequently monitor traffic. You can mark these points so the detector will announce User mark ahead when you approach them. Among other announcements, the Voice Notification feature also lets you know when you are approaching a radar and what type of radar it is (red light, speed, etc.). Plus, the R7's dual antenna detect threats from all 4 directions, with voice alerts for the direction of threat. It even shows the direction, band and signal strength for each.