Cobra XRS 9940 Maximum Performance 12 Band Radar/Laser Detector 12-band high-performance radar/laser detector with ultra-bright 1-inch color OLED and voice/tone alert Detection and separate alerts for X, K, Ka, and Ku radar bands, laser signals Superheterodyne Technology provides extra detection range and the best possible advance warning to even the fastest radar guns Safety Alert function warns drivers of emergency vehicles and roadwork hazards One-year warranty