Perfect to replace your damaged and old one.Key case, no key blade. Not electronic internals.Take the internal electronics(include immobilizer or transponder chip) from original remote and place them to our key shell, then you are ready.Fitment:For Mercedes Benz B C E S ML SLK CLK ClassItem Name: Key Shell CaseMaterial: ABSButtons: 2 ButtonTransponder Chip: NoElectronics or Battery: NoNotes:This item isnand 39 t a remote, it is just a remote key shell case replacement.There is NO interior (remote or electronics or transponder chip)unit inside.Please compare with pictures before purchase, make sure your key is exactly as same as picture shows.Due to the light and screen setting difference, the itemand 39 s color may be slightly different from the pictures.Package Includes:1 x Key Shell Case Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-YJL official store