It’s a Seiko diver with a bi-color blue & red “pepsi” bezel and jubilee bracelet. At the time the movie was set (1983), this would have been model number 6309-7290. But the movie watch might be the more modern (1988+) SKX007 or SKX009. The older and newer models are not totally identical but close enough that I can’t tell from the photos. The SKX007/9 is still available and quite popular!