This is a novelty watch made in 1987. In the old days of digital watch innovations, the major digital watch makers were trying to outdo each other by incorporating many functions in their watches. Casio then made this cool watch which has a unique function of transmitting voice over FM frequency signal. With a radio tuned to an empty FM band, one would be able to transmit their voice or their music to a local radio network tuned to the TM-100's transmitting frequency. Transmission range is capped at 100m radius from the TM-100 in the best environment. In the urban environment, transmission range varies from 10m to 60m. There are very limited pieces of this watch today and very few people own this cool gadget watch.

WATCHES WITH MODULE 661

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