The watch that appear in Jaws (1975) is an Alsta Nautoscaph produced by the Alstater Watch Company.
Most examples were issued with a traditional round case, but some rarer executions utilized a cushion-shaped case instead.
In 2017, Alsta Watch Company, manufacturer of the Alsta Nautoscaph divers’ watch, has re-awakened after a sleep of almost 40 years by watch connoisseur and actor Angus Macfayden, releasing the Nautoscaph Superautomatic in a limited edition of 1975 pieces .