The other watch is usually a Seiko “Golden Tuna” dive watch, Ref. 7459-7009 (over), which the secret agent wore in the course of the Motion picture’s submarine search sequence. Traditionally, the watch, whose nickname will come from its “tuna can” scenario, was the initial dive watch using a quartz movement https://www.watchesworld.com/from-sean-to-daniel-tracing-the-evolution-of-james-bonds-iconic-watch-collection/