Specification:Type: Flip Key Fob CaseColor: BlackButton: 3 Lock / Unlock / BootBlade: Uncut Blade, need to be cut by locksmithMaterials: Plastic MetalBattery : Yes (CR2032 Battery)Circuit Board / Transponder chip: NoReference OE/OEM Numbers:4D0837231A / 4D0837231N / 8Z0837231 / 8Z083723101C Fit For Audi:For Audi A2 1999 - 2005 (8Z)For Audi A3 1997 - 2003 (8L)For Audi A4 1998 - 2001 (8D)For Audi A6 1997 - 2005 (4B)For Audi A8 1994 - 2009 (4D)For Audi TT 1999 - 2008 (8N)and any other model Package Include:1 x Key Case1 x Battery (CR2032) Feature:- For Audi 3 button remote key fob service repair kit.- A perfect replacement for a key with broken buttons or worn key blade.- Existing circuit board and transponder chip can be installed from your original key into the new case.- You can have the new key blade cut at your local locksmith’s.- If the original keys look the same this is the one you need.