This item is not a remote key, but only a replacement shell. It includes only the shell and the uncut key. It does not include any internal electronic components. The best replacement for a key with broken buttons or a worn shell. It does not contain an internal unit (remote/electronics/transponder chip). Simply cut the key blade, remove the internal electronics (including the immobilizer/transponder chip) from the original remote, and place them in our shell. That's it! Compatible with: E81 1 Series (2004-2006), E46 3 Series (1999-2006), E39, E60, and E61 5 Series (1997-2006), E63 and E64 6 Series (2004-2006), E38 7 Series (1995-2002), E83 X3 (2004-2007), E53 X5 (2000-2007), E36/7 and E36/8 Z3 (1998-2003), E85 and E86 Z4 (2003-2007). Product size: 11.1 x 3.9 x 1.7 cm. Product weight: 0.36 g. Material: PP. Package contents: 1 x Key shell. Only the mentioned package contents are included; other products are not included. Note: Due to lighting and different displays, the color of the item in the picture may vary slightly from the actual color. The allowable measurement error is +/- 1-3 cm.