This unique product is a "switchblade" style remote + key combo unit. There are 4 buttons: Lock, Unlock, Trunk, and Panic. It performs two functions: It works as a key AND a keyless entry remote. With the press of the button, the hidden keyblade is spring-released, automatically locking into the useful position. Press the button again so you can press the blade back into it's hidden position. The remote must be professionally programmed when received by your dealer or a local automotive locksmith. The key blade also needs to be cut. This transmitter will work on vehicles equipped with turn-the-key ignition and standard keyless entry system. Compatible Vehicles: Kia Rio (2018-2021)