This is a kind of high quality and durable key case. If you have a key with broken buttons or worn key case, this unit is the best replacement for you. Features: 1. Best replacement for a key with broken buttons or worn key case. 2. Key case only. No electronic internals. This is an aftermarket replacement case. 3. Take the internal electronics (include immobilizer/transponder chip) from original remote and place them to our key shell,then you are ready 4. Good quality, durable to use. Specifications: Compatible with: for Citroen C1 C2 C3 C4 and others Product size: 8.4 * 3.7 * 1.7cm / 3.3 * 1.5 * 0.7in Product weight: Approx. 23g / 0.8oz Package size: 8.4 * 3.7 * 1.7cm / 3.3 * 1.5 * 0.7in Package weight: Approx. 24g / 0.8oz Fitment: For Citroen C2 C3 C4 C6 and others... Package List: 1* Key Shell Case Note: This item isn't a remote, it is just a remote key shell case replacement. There is no interior (remote/electronics/transponder chip) unit inside. Please check your key look the same as the one in our product picture above before you purchase.