Before 1970s there were basically two types of watches you could get, mechanical and automatic.Well, most of the people nowadays ask me what is a mechanical watch.I have tried my best to explain this in my blog.
|HMT hand wound movement.|
The detailed article is here
Last but not the least,quartz. Quartz is your regular battery operated watch. It has a quartz crystal in it which vibrates at the frequency of 32768 Hz.There is a chip in the watch which counts it and then the hands move.I think there is no need to post the pic of a quartz watch as most of you would be aware of it.