How Does Bluetooth Send Music Through The Air?

How Bluetooth actually works is not slow Wi-Fi. This film goes inside Ericsson's 1994 lab in Lund where Jaap Haartsen and Sven Mattisson invented a radio that hops 1,600 times a second across 79 channels to cut the headset cable. It explains piconets, pairing, adaptive frequency hopping and power vs range, and why Intel's Jim Kardach named it after Viking King Harald Bluetooth, from the first headset in 1999 to Bluetooth Low Energy today.