New Smart transmitter Fob Remote Entry Key Case for Benz Mercedes C E SL ML Class 3 Button (Just a Empty Key Shell, No Chips Inside) Not a Original item,Just a empty case, no electronics,no circuit board included Easy to install,no reprogramming required This is a replacement part to match the original key in form and function Each item have been tested before ship. high quality material and meticulously crafted. Package Include:1X Remote key case; Ship with tracking No,about 6-15day arrival