Should say on it, if not when you go to get a battery, just tell them age/model of car and they should have it listed, often the short code number eg 065 will have the letter C after it ie 065C, denoting calcium, these run a very slightly higher voltage charging system, which is far more refined than a std system, you can use a calcium in a older pre calcium car but not older battery in calcium car due to this, they are only slightly more money, but are much better.
tabetha