3-button: 3 pieces 4-button: 1 piece Operation confirmed. These are used items, so there may be scratches and dirt. No claims accepted. Perfect for spare keys, etc. Please prepare your own batteries. I also have smart keys and other items for sale. Bulk purchases are welcome. Please read the profile before purchasing, and please make your purchase after understanding the terms. * Please replace the batteries and initialize the key yourself. * Regarding keyless entry settings, I do not know how to do this, so please handle it yourself. * These are registered smart keys, so please check the internet or contact a dealer for settings.