Greater energy efficiency as much less power consumed from Bluetooth devices.
Can interconnect a lot of devices in one place (Mostly utilised in office spaces).
Bluetooth is a popular mechanism for short distance point to point or point to multipoint communication.
The features include low cost, low power and small size. Also the robustness for the interference has made Bluetooth a highly versatile and attractive technology among other short range wireless technologies.
Operating over unlicensed, globally available frequency of 2.4GHz, it can link digital devices within a range of 10m to 100m at the speed of up to 3Mbps depending on the Bluetooth device class.