We have various testing machines to design accurate and precise parameters for our products. All switches are performance tested. According to the factory specifications, it fits the car perfectly. Replaces old or damaged products, easy to install. Product Name:View Camera Part Number: 7P6980551C Compatible Car: for for C7 A6 A7 A8 7P Notes: Please make sure the number matches the part you are replacing. Please be very careful to check our photos, make sure the photo showed is same as you wanted. Professional installation in highly recommended (No instruction included) Material: Plastic colour: Black Package Contents: 1 x for Rear View Camera Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.