Feature 1 This is an after market replacement case 2 Comes with two 3V battery three Micro switches 3 This is the parts usually need for replacement your not working damage worn remote key fob 4 Inner remote is not included in this auction You can use your old remote5 If you use old remote there is No programming required Fitment The Compatibility Is Just For Reference Please Compare with Your Original One Before Purchasing 2001 2007 Mercedes C Class1998 2009 Mercedes E Class2001 2009 Mercedes CLS2001 2009 Mercedes CLK2005 2010 Mercedes ML2005 2010 Mercedes B CLass2005 2010 Mercedes SLK1999 2006 Mercedes CL1999 2006 Mercedes S ClassNote 1 Please kindly check all parts of the key if your key have same profile this will fit your car 2 Circuit board or Transponder chip are not included Please check the picture carefully before purchase 3 1 Please ensure your existing key case look like the same as one in the picture This key case comes without an uncut blade but you can use your existing key blade 4 No Instructions Included Professional Installation Is Highly Recommended Package Included 1 X Remote Key Shell2 X 3V Battery3 X Micro Switches Specification ColorBlackButton3 ButtonsBatteryYesSizeApprox 64 5x36 3x15mm