What does a range of 10 metres mean when using the Nokia 6310 with compatible Bluetooth devices?
Since Bluetooth devices communicate using radio waves, your phone and the other Bluetooth device do not need to be in line of sight. The two devices only need to be within a maximum distance of 10 meters metres of each other, although the connection may be subject to interference from obstructions such as walls or other electronic devices. (In some countries, there may be restrictions on using Bluetooth devices. Check with your local authorities.