Why use Bluetooth Earphones? With handy small earphone headsets that are cordless and enable hands-free answering and talking on the phone, Bluetooth technology makes mobile phones more functional. Bluetooth wireless technology has enabled the wireless communication of numerous electrical components, and it much outperforms infrared in terms of use and practicality. Bluetooth is a high-speed, low-power wireless communication technology that allows users to connect their phones or other portable devices with little to no effort.