The Passport 8500 has been hailed as the most revolutionary radar/laser detector ever. Now, Escort is raising the bar again. The Passport 8500 X50, the next generation of the 25-year-old favorite, is the most advanced and sophisticated radar and laser detector ever. The Passport 8500 X50's V-tuned radar receiver provides extreme detection range on all police radar, conventional radar, and "instant-on" radar, including the new POP X band mode, and up to 50 percent more range than the original Passport 8500 on the all-important K and Ka bands. In addition, the detector's digital signal processing (DSP) provides maximum range with minimum false alarms. The unit also includes a patented AutoSensitivity mode that intelligently distinguishes real threats from other known sources of radar, virtually eliminating false readings.