For BMW CAS3 Intelligent Remote Control Car Key with Integrated Chip & Battery, Frequency: 868MHz

For BMW CAS3 Intelligent Remote Control Car Key with Integrated Chip & Battery, Frequency: 868MHz 1. This is a DIY smart remote control key with a frequency of 868MHz with integrated chip. 2. The key consists of a key housing, key blade, circuit board, integrated chip and battery, which is a complete remote control key. 3. Before using, you need to program the key and cut the key piece at the car locksmith. 4. If your key has a different frequency or chip type, please do not buy it. 5. Material: metal + plastic.