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Description:A Nokia phone supporting Bluetooth contains a tiny, inexpensive radio chip, which is designed to send data over a specific radio frequency to another Bluetooth chip. The receiver chip, whether it's in a PC, phone, or other device, then transmits the data to the receiving device. The chips are easy to make and the entire process is very low on power consumption, so it's no surprise that Bluetooth has become a wireless industry standard. Bluetooth communicates over radio waves on a frequency of about 2.45 gigahertz. This is the same band used by many industrial and medical devices as well as some household ones, such as garage door openers and baby monitors.