The rearview mirror switch controls the vertical or horizontal adjustment of the corner of the side mirror, making it easy to observe what is behind the vehicle and understand the situation behind you. The window switch is easy to install and requires no additional adjustments. Compatibility: For Prius C 2014-2019, part number 84690-34210. Material and durability: The outside mirror switch is made of ABS plastic, not easily broken and it provides reliable performance. Installation and performance: The outside mirror switch is designed to install easily and without causing any damage to your car. It enables smooth and effortless control of your car's mirrors, adding daily driving convenience and functionality. Use scenarios: - While merging or changing lanes in heavy traffic, quickly adjust the mirror angle for better visibility. - Parking in tight spaces or garages, adjust the mirror to reduce blind spots and improve clearance. - Sharing the vehicle with different drivers who have distinct mirror preferences, enabling fast, personalized adjustments.