I bought this as watch as parts hoping to repair it. However, its a little more involved then I have time for... It had some old crusty.In it with mild corrosion (please see pics). It is also missing the internal electronic crystal and the buttons seem stuck. I did not try to. I cleaned the outside of the watch, added the leather band and took some pictures. On the web that offer service and sell modules.
It will most certainly need a module, deep cleaning and the buttons unstuck. T ry searching " pulsar P3 replacement module" and you will see parts / service providers. This is a great opportunity to get an affordable.
You could also have it as a non-working display. The item "Pulsar P3 LED James Bond Vintage 1970s Time Computer Stainless Watch- Parts Only" is in sale since Friday, July 10, 2020. This item is in the category "Jewelry & Watches\Watches, Parts & Accessories\Watches\Wristwatches". The seller is "craiger7" and is located in Huntington Beach, California. This item can be shipped to United States, Canada, United Kingdom, Denmark, Romania, Slovakia, Bulgaria, Czech republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Australia, Greece, Portugal, Cyprus, Slovenia, Sweden, Belgium, France, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Mexico, New Zealand, Switzerland, Norway, Croatia, Bermuda, Guernsey, Gibraltar, Iceland, Jersey, Liechtenstein, Luxembourg, Monaco.