A damn shame that this never made it past the prototype stage, this monster from the British company behind the massively successful ZX Spectrum, working alongside watch specialist Timex, had three separate sections: an LCD watch, piezoelectric speaker and FM tuner, along with a battery compartment in the clasp. It was cancelled as a result of Sinclair's financial woes, with only 11,000 being produced.

1985: Sinclair FM Wristwatch Radio