Keyecu Replacement Shell Smart Remote Key Keyless Entry Case Fob 4 Button For BMW 7 Series 745 750 i Li With Insert Blade This is a brand new 4 buttonremote keycase fob NO interior (remote / electronics / transponder chips / battery) unit inside. Just cut the keyblade, take the internal electronics (include immobilizer/transponder chip) from original remote and place them to our key shell, then you are ready! Please make sure your key is the same with the picture shows before placing order This is an after market replacement case