Doraemon: Nobita's Wedding Eve (1999)

A 26-minute Doraemon short directed by Ayumu Watanabe for Shin-Ei Animation, released in Japan on March 6, 1999 as part of that spring's triple-feature program alongside the main feature Doraemon: Nobita Drifts in the Universe. Nobita uses Doraemon's time machine to check whether he really marries Shizuka, but a button mistake lands them on the day before the wedding instead, and the future sequence lets the film cut between the boy Nobita still watching from the sidelines and the grown man he becomes. (Wikipedia)

Watches

Rolex Explorer: In the future sequence, adult Nobita, working as a nature-conservation officer, checks the time on a steel watch drawn with the Rolex Explorer's cues: crown logo, 3-6-9 Arabic indices, Mercedes hands, and a three-link Oyster-style bracelet. Three independent Japanese sources converge on the identification: a collector blog laying out the cue-by-cue reasoning against frame images ("絶対にエクスプローラーですよね？"), a watch-hobbyist site reaching the same read more cautiously ("おそらく...だと思います"), and a long-running fan matome where the identification draws no serious disagreement. The blog further suggests ref. 14270 purely from the film's 1999 date and the reference's contemporary popularity, which stays here as the sources' inference rather than an asserted reference; the row is cataloged at model level. The drawn case reads slightly off from any real Explorer's proportions, an animation-specific departure the blog attributes to licensing-averse stylization rather than a different watch. (1016watch-style, watch-times, Togetter)
© Shin-Ei Animation