The transmission distance of Bluetooth is generally within 10 meters, which is exactly the size of a room. It can transmit data through the partition wall, which is very suitable for home environment.
Although it has many advantages, Bluetooth transmission protocol, like other 2.4G devices, shares signals in this frequency band, which inevitably leads to signal interference. In addition, Bluetooth protocol is not a free technology. Any manufacturer using this technology will pay a patent fee to the organization, and this part of the fee will also be reflected in the cost. In 2012, the price of Bluetooth audio equipment is still higher than that of ordinary products.