Bluetooth is a wireless technology standard for exchanging data over short distances (using short-wavelength UHFUltra High Frequency (300-3000 MHz) radio waves in the ISM band from 2.4 to 2.485 GHzGigaHertz (GHz) 10^9 Hz) from fixed and mobile devices, and building personal area networks (PANs). Invented by telecom vendor Ericsson in 1994, it was originally conceived as a wireless alternative to RS-232 data cables. It can connect several devices, overcoming problems of synchronization.
Bluetooth can, and often does, interfere with 2.4GHz Wi-Fi channels, however the adaptive frequency hopping feature can minimise disruptions to Wi-Fi.
Bluetooth has 80 allocated RFRadio Frequency channels (numbered 0-79) that are 1 MHzMegaHertz (MHz) 10^6 Hz wide.