| Bluetooth ability
The used frequencies determine opportunities Bluetooth to the data transfer. Width of the channel for Bluetooth devices makes 723 2 Kbit/second with in asynchronous modes (however, even in this mode all the same remain up to 57.6 Kb/sec with for simultaneous transfer m the opposite direction), or 4339 Kb/sec with in completely synchronous mode. If data is not transferred, then the connection can be transmitted through Bluetooth up to 3 audio channels. Each of audio channels supports synchronous channels with speed 64 Kb/sec in each direction. Besides, it is possible combined transfer of data and vote.
Distance on which Bluetooth connection can be established is insignificant, and makes from 10 up to 100 meters. But even now for Bluetooth it is not required direct visibility or directed aerial. The connection can be established even through a wall (certainly, if the wall is not shielded).
The main feature of Bluetooth is that various Bluetooth devices connect with each other automatically, if it only appears within the limits of reach. Cables, drivers and so on are not required to the user. The user will take care only that Bluetooth devices would be closely to each other enough. Bluetooth device and software would take care about all the rest.
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