Weki has various series of BMW smart keys, and we have smart remote controls for CAS1, CAS2, CAS3, and CAS4 systems.The BMW smart key is a technologically advanced device that offers a range of functions and serves various purposes. It provides convenient access and control over a BMW vehicle through its smart features.The key allows for keyless entry, enabling the owner to unlock and lock the car doors without physically inserting the key into the lock. It also incorporates a remote control functionality, allowing the owner to remotely start the engine, adjust climate settings, and even park the vehicle using the key's integrated features.