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DirectBand is a Microsoft-owned trademark for a communications technology for continuously delivering time, sports, weather, news and relevant web-based information to wristwatches.
It uses the deregulated (1983) sidebands (or subcarriers) available to broadcasters operating FM radio stations, that are normally used for RDS (Radio Data System).
DirectBand is a two-chip set that consists of a system-on-chip processor which includes an ARM7 CPU along with SRAM and ROM, and a radio chip that contains a tiny, sensitive 100 MHz RF receiver.
See also: Smart Personal Objects Technology
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