Have different testing machines to design accurate parameters for our products. All switches are performance tested. Made of high-quality materials, it is lightweight, 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 seek 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 variations. Color and appearance may be changed; please take this into consideration before placing the order if you have specific requirements for color or appearance. Color: Black. Material: Plastic. Package Contents: 1 x window switch. Only the above package content is included; other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture to be slightly different from the real thing. The measurement allowed error is +/- 1-3 cm.