Feature 1Real carbon fiber texture enhances the 3D effect and highlights the personality. 2Made of high hardness carbon fiber material, it is as hard as metal, but as light as a feather. 3Reserved mechanical key hole, user-friendly design, easy to use and access. 4Original car key 3D digital modeling, smooth docking with the key. 5Provide protection for the key and does not hinder signal transmission.Features: 1. Real carbon fiber texture enhances the 3D effect and highlights the personality. 2. Made of high hardness carbon fiber material, it is as hard as metal, but as light as a feather. 3. Reserved mechanical key hole, user-friendly design, easy to use and access. 4. Original car key 3D digital modeling, smooth docking with the key. 5. Provide protection for the key and does not hinder signal transmission. Specification: Condition: 100% Brand New Item Type: Car Key Case Material: Carbon Fiber Optional Color: Red, Black Fitment: Fits for BENZ SMART C CLASS Package List: 1 x Car Key Case Only Note: 1. This is just a replacement key shell case only, not a remote key, and there is NO electronic internals. 2. Other similar looking keys are also available.