Passport 8500 X50 Red designed for the driving enthusiast, the Passport 8500 X50 delivers the best possible protection in its class. In test after test, the Passport 8500 X50 comes out on top. Digital signal processing (DSP) provides maximum range, with minimum false alarms.
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I used this detector for a few weeks and then returned it. It was constantly giving off false alarms in the city and on the highway. It did do a good job of actually detecting police radar and laser at a good distance away, but after so many false alarms, one begins to ignore its alerts. I think that is the nature of these machines... there are too many radar sources putting off junk that it is hard even for the best of these devices to tell the difference. In the city, this machine is useless. I realized the best way to avoid getting a ticket was not to speed. The laser detector works, but by the time it beeps and says laser, the police already have your speed locked in. Don't waste your money on this device.