Compared with Bluetooth 4.2, the theoretical transmission rate of Bluetooth 5 is doubled, from 1Mbps to 2Mbps. However, this is only the theoretical transmission speed. For some technical reasons, in real application scenarios, the transmission speed of Bluetooth 5 is about 1.7 times of Bluetooth 4.2. Moreover, the farther the transmission distance is, the lower the transmission speed will be. The impact of the transmission distance on Bluetooth 5 is greater than that of Bluetooth 4. Some people have done tests, and when the transmission distance exceeds 10 meters, the advantages of Bluetooth 5 in transmission speed will gradually weaken when compared with bluetooth 4.
The transmission distance of Bluetooth 5 has been increased. The theoretical effective transmission distance of Bluetooth 5 is 300 meters, while Bluetooth 4 was only 100 meters. But in practical application, the transmission distance is also affected by the power of bluetooth device and antenna. For example, in order to save power and increase working time, the actual transmission radius of the existing Bluetooth headset is generally 10 meters regardless of whether it adopts bluetooth 5 or Bluetooth 4.