Bluetooth has become an essential device we depend on. Millions of products on the market and products we use, use Bluetooth. Although we use Bluetooth everyday, most people don’t know how Bluetooth works. Bluetooth is a wireless short range communication technology that uses radio waves instead of cables. RF transceiver operates in the unlicensed ISM band centered at 2.4 gigahertz (the same range of frequencies used by microwaves and Wi-Fi)
Read more here:https://www.scientificamerican.com/article/experts-how-does-bluetooth-work/
Products like beats use Bluetooth. This relates to engineering because Bluetooth takes old technology and replaces with new and better ones. Engineers need to test out all the products and analyze it to make sure its safe.
