The Watch could receive messages from M and also print them with a ticker-tape to be conveniently examine later on. Rather in advance of its time for that 1970s, I’d say. French watchmaker Baltic introduced new generations of two of its longstanding traces, the HMS (pictured) as well as Bicompax https://www.watchesworld.com/from-sean-to-daniel-tracing-the-evolution-of-james-bonds-iconic-watch-collection/