Compatibility: Compatible for Mercedes A W177 E-Class 2017 (E200/E200L/E300/E300L/E320/E320L/E400) - S-Class 2018 (S320L/S350L/S450/S550e/S560/ S63 AMG / S65 AMG ). (Check if your car key is the same as in the picture before you buy it.) Material: It is made of high-quality cowhide (nicknamed crazy horse leather). Due to the smooth touch, pressing on the epidermis will cause a discoloration effect. It is mainly the first layer of cowhide embryo, which belongs to high-end leather. Especially popular in Japan, European and American markets. Scientific design: the key box designed according to your original key. All keys can still be operated and pressed as usual, all radio signals work without problems. Ideal key protector: it not only protects the car key from scratches, but also ensures that your key has a retro style. Package list: The car key case contains 1 key case and 1 key ring. This key shell is easy to install.