What a project this turned out to be! I bought as a bit of fun for £14.00 and it was completely dead. when I stripped it all down I found an amazing circuit board with acid damage to one side. I cleaned all this off and re-flowed all the solder joints but nothing would fire it into life. eventually I found that one of the resistors on the other side was loose. As they are so small I didn’t hold out much hope for soldering it back on but after a few attempts I was successful . Once rebuilt I could wait to press the “speak” button. Sure enough out came a very American voice advising me of the time. Very rewarding for all the effort I put in too!
Here is a video clip of the watch talking! https://www.youtube.com/watch?v=1q6SgMl4xjQ