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Pulsar Calculator Watch (1972)
Hamilton Pulsar was a luxury watch manufacturer that was known for its pioneering work in creating the world's first truly digital timepiece in 1970, and was featured in the James Bond movie "Live and Let Die". In 1975 the company introduced the first fully functional calculator watch.
Casio Databank (1980s-current)
In the 1980s, Japanese timepeice manufacturer CASIO introduced the Databank, a LCD watch line that continues to be manufactured to this day. Databanks have had many configurations over the years, including calculator watches, but primarily they have been used for limited PDA-type of functions (Appointments, Contact, Calendar) that we see as common features in today's smartphones.
Microsoft SPOT Watch (2000's)
In the Mid-2000's Microsoft experimented with a 1-way FM broacast radio data service known as MSN Direct.
Among the devices to use this service were SPOT watches which were made by various manufacturers. The data broadcast by MSN Direct included localized weather service, news, and traffic reports.
Microsoft shut down MSN Direct in January of 2012.