The Whistler CR90 Radar Detector for vehicles offers complete laser or radar detection and comes with an internal GPS. Its audio/visual alert informs you about speed traps and dangerous intersections. This device features city/highway modes to reduce the number of false alarms in densely populated regions. In addition, this device is programmed to pick up all X band, K band, laser, Ka Superwide band signals, coming from the front/rear area of the vehicle.