Have different testing machines to design accurate and accurate parameters for our products. All switches are performance tested. Made of high-quality materials, it is , rust-proof, colorfast, and durable. Quality aftermarket product. According to the specifications, it perfectly matches the car. Replace old or damaged products, easy to install. Substitute manufacturer part number 214939 for reference product type: window switch Manufacturer's number: 8200214939 214939 Note: Installation guide not included, we strongly recommend you professional installation. Please check as much as possible to make sure the item is what you need. Tips: The product may be updated constantly, The Actual Product May Have Slight Differences Or Color Differences the color and appearance may be changed, please don't mind. And take a consideration before place the order if you have request for color or appearance. Colour:Black Material:plastic Package Contents: 1X window switch 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.