1、This remote key fob has 2 buttons, with the functions of locking and unlocking the door. 2、Built‑in chip, 433HMZ frequency, high sensitivity and stable performance, reliable to use. 3、High grade ABS material, wear resistant, anti‑corrosion and durable, not easy to damage. 4、Built‑in 1 CR2025 button battery, with 200mAh capacity, it has long service life. 5、Original standard, it is a direct replacement for the old or damaged remote key. Item Type: Smart Car Key Material: ABS Frequency: 433MHz Buttons: 2 (car door lock and unlock) Battery: Button battery, 1 x CR2025, 200mAh (built-in) Instruction: Our keyless entry remote fobs are brand new never used inside and out. This means that the outer shell (casing), button pad with icons, and electronics (pcb) have never been used before. Beware of other items being sold as brand new when in fact it is a used circuit board inside of a new shell (case). These items can be as much as 20+ years old depending on the year of your vehicle. Replacing the case on a used original remote may interfere with the functionality and manufacturer's warranty. 1 x Car Key