Description:100% Brand New and High Qualityyou need confirm your current smart key looks the same with ours.If you have a worn broken smart key， you only need to take the internal electronics (include immobilizer/transponder chip) from original remote and place them to our remote shell，then cut the blade from the locksmith to be match with your car.If you want an additional remote，you should purchase another panel and program it by a locksmith/dealer.This item isn't a remote，it is just a Key Case shell.Specification:Color: BlackSize:65 x 35 x 10mm / 2.56" x 1.37" x 0.39" (LxWxH)Key Blank: YesButton:2ButtonsFit for:2001-2007 Mercedes C Class1998-2009 Mercedes E Class2001-2009 Mercedes CLK2005-2010 Mercedes ML2005-2010 Mercedes SLK1999-2006 Mercedes S ClassMercedes CLSMercedes B CLassMercedes CLTransponder chip:noElectronice/Battery:noNote:Please compare the size and shape with your old key prior to purchase.Please note there is NO interior (remote/electronics/transponder chips) unit inside.Package Includes:1 x smart case shell