The directional arrows are driven by data received directly from the detector's sensors and antennas. This data is then analyzed by software that helps the system identify the source location. While all of our 360 models have good arrow performance, recent updates for our newest models have improved upon what we had, so arrow performance is top notch.
In real-world driving, the difference is usually very small, often not even noticed by the average drive. The arrows give you great information that allows you to drive smarter and worry free.