Save yourself some speed tickets with the K40 RD850 that detects wide range of radar - X-Band, K-Band, and Ka-Super Wideband (33.4-36.0 GHz) and laser. The sleek package of this K40 car radar detector easily mounts on your dashboard, visor or windshield with no installation. The unique microwave radar receiver design of this K40 portable radar detector ensures outstanding performance to all radar guns. Patented Intermediate Frequency Rejection software installed in the K40 RD850 eliminates non-police and false signals. The 5-window design of this K40 car radar detector aids in receiving laser signals from front and rear. To indicate the strength of police radar signals, this K40 portable radar detector uses four LED indicators.