TOFNK No Chip Remote Key Fob Case Shell replacement for Mercedes Benz C350 Benz GL450 Benz E320 Mercedes-Benz SLK280 2007 Mercedes-Benz R320 Mercedes-Benz CLS55 AMG 4/3+1panic Buttons MERCEDES BENZ 4/3+1panic Buttons ,Transmitter Keyless, No Transponder Chip and Electronics/Battery, shipping time is about 7-15days 1 X Keyless Entry Key Remote Fob Case, Best replacement for broken or worn keys, or great for an additional key. This item isn't a remote key, it's just a remote key shell. NO interior (remote/electronics/ignition or transponder chips) unit inside. Take the internal electronics (include immobilizer/transponder chip) from original remote and place them to our key shell, then it is OK! There's no programming needed. Pls kindly check out your key button position before buying, make sure your remote key case looks exactly the same with our case.