1998 ford expedition how do you tell if your vehicle came equiped with a keyless entry?

I was wondering how do you tell if your vehicle is equiped for keyless entry. I want to buy a remote for it because the used car dealer said they would get me one but didnt. So i amm just going byt heir words it came equipped with it. I can get it on ebay for $25 for the remote and set it up. But is there a way to tell I have this option