It is a 2 button remote key fob case shell cover. The fob case shell cover comes with screw and case but no blade. Best replacement for a key with broken buttons or worn key case. There is NO interior (remote/electronics/transponder chip)unit inside. This item isn't a remote key and it is just a remote key shell case replacement to protect your immobilizer. Specifications: Compatible with: For C1 C2 C3 C4 XSARA For 107 207 307 407 106 206 306 406 Product size: 4.5 * 3.7 * 1.7cm / 1.8 * 1.5 * 0.7in Product weight: . 15g / 0.52oz Package list: 2 x Key Shell Case Note:Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.