Strong suction cup provides reliable hold, preventing mirror shaking or detachment while driving, even on uneven surfaces. Quick, tool installation on any smooth, clean windscreen within 1 minute; grips firmly and won't move. Detaching leaves no marks. Clear visibility is essential for safe driving; a dependable rear view mirror increases driver awareness and reduces blind spots. Flexible design allows fast, easy adjustment of the mirror angle by hand, while remaining firmly in position once set. Use scenarios Driving test or practice: ensures a stable, dependable mirror position for better situational awareness during the exam. Temporary use in rental or shared vehicles: adds rear visibility without permanent installation and leaves no marks when removed. City or highway driving on uneven roads: maintains a stable viewing angle; easily adjust the angle as needed for visibility.