What is the difference between Kiox 300 and Kiox 500?

For improved readability, Kiox 500 offers a 2.8-inch display, 40 percent larger than Kiox 300 (2-inch display). In addition, Kiox 500 is equipped with a buzzer that provides acoustic cues in certain situations, e.g. as a turn-by-turn directions when navigation is in progress. Both displays can be installed on the same mount.