- No liquid leaking housing design, shockproof, waterproof, accurate pointing
- The reading method of ball compass is opposite to the pointer compass, the direction of the ball compass you see is the direction the car is heading.
- Installation instructions: First determine the correct direction outside the car, other reference compass should be separated from the ball compass by more than 20 inch.
- Then find a suitable position in the car so that the direction of the ball compass is the same as that outside the car.
- Finally, tear off the double-sided tape to fix the ball compass.
