1. Vehicle guide a ball and the traditional compass. In order to facilitate drivers know the direction of travel, omnidirectional gyro design using guide cart, you see the ball on yourtext logo, is your actual direction now. For example, guide the ball in front of you, the ball to the right of your text display "North", the front of you now is "North" side. The WYSIWYG design greatly convenient driver search direction, range conversion process omits the traditional compass, improves driving safety.