The XRS 9340 provides total protection and peace-of-mind with Xtreme Range Superheterodyne technology, detecting 12 radar/laser bands with reliable and proven performance. The 9340 is also equipped with an UltraBright Data Display, Safety Alert, Strobe Alert and many other Cobra feature mainstays. Spectre Alert Undetectable Provides complete immunity and alerts the driver when under surveillance of Spectre 1 Radar-Detector-Detectors. Strobe Alert works with tens of thousands of emergency vehicles currently equipped with traffic light controlling strobe emitters Provides advance warning of the presence and/or approach of emergency vehicles Safety Alert - warns drivers of the presence and/or approaching emergency vehicles, railroad crossing, and road hazard locations equipped with Cobra's exclusive Safety Alert transmitters Auto Mute - Automatically mutes the alert tone for enhanced driver convenience / IntelliMute - Relative-speed-sensing Auto Mute system that virtually eliminates false alerts. Digital Signal Strength Meter provides the driver with relative proximity to the target using 5-level digital signal strength meter SmartPower Automatically shuts off power to the unit when ignition is turned off City/Highway Modes Allows the user to select operating mode, reducing the frequency of falsing in densely populated urban areas Dim Mode Allows the user to dim the radar detector display enhancing night driving visibility. Stay Set Electronic Memory Electronically remembers radar detector settings for an indefinite period of time even with the power removed