Bluetooth is a wireless technology standard for exchanging data over short distances (using short-wavelength UHF radio waves in the ISM band from 2.4 to 2.485 GHz) from fixed and mobile devices, and building personal area networks (PANs). How to use : 1. Search for the Device List and opt for the device to whom you want to Chat. 2. connect through Bluetooth 3.Start Chat.....