It was sort of an i-phone, actually. We use ours to check Facebook.; they used theirs to check the position of the planets.
It was only about the size of a shoebox. It was found in a shipwreck. Because of the corrosion and the delicacy of it, reconstructing it has been the task of decades. They left us a puzzle; we are figuring it out. Here is an article about some of the latest discoveries about it. Here you can see a video about it.
There are still some questions. Like, did it do some things that we haven’t found yet (due to the damage to it)? How did they make it (since we don’t think they had lathes)? Given that they could make things like this, how come we haven’t found a lot more? In fact, are there more to be found in this very shipwreck? Why didn’t they make clocks? (Hint: maybe because you don’t really need clocks until you have electric lights and trains.) So many exciting questions! No sarcasm here. I really am excited.
This reminds me of what my Old Testament Backgrounds teacher once said about Babel: “If God hadn’t confused the languages, perhaps the industrial revolution could have happened right then.”