1Feature: The car radar detection device is a laser eye detector for a 360 degree laser detection, can detect any stable or mobile radar speed monitor 200?800m ahead. 2Function: When detection, the Gps will tell you by make a sound to show you are approaching speed detection device, to confirms the your speed on the stretch of road. 3Powerful: Adopts extreme range super heterodyne technology, with super fast sweep circuitry, provides extra detection range and the best possible advance warning. 4Unique Design: Adopts speed sensing auto mute system that virtually eliminates false alerts, and will render your detector undetectable by currently available radar detector detectors. 5Record Keeping: Provides complete immunity to Vg?2 radar detector, electronically remembers radar detector setting for an indefinite period of time even with the power removed.