The Watch could receive messages from M and also print them over a ticker-tape to become conveniently examine afterwards. Pretty in advance of its time with the 1970s, I’d say. I know some will disagree with me, but I find Hudson to become a fairly engaging actor and this movie https://www.watchesworld.com/from-sean-to-daniel-tracing-the-evolution-of-james-bonds-iconic-watch-collection/