A portable device for wirelessly communicating with a remote further device; the portable device comprising: I) a power source chargeable by a power supply separate from the portable device; the portable device configured to have a plurality of coupling states associated with the power supply; the power supply being separate from the device and remote from the further device; II) communication apparatus wirelessly connectable to the further device via a personal area network, PAN, and configured to enable the portable device to have a wireless connection state associated with the further device; III) a processor configured to: monitor a change between a first and a second of the said coupling states; wherein the first coupling state is associated with the power source being coupled to the power supply whilst the second coupling state is associated with the power source being uncoupled to the power supply; and, output data for changing the connection state based upon the change from the first coupling state to the second coupling state; characterised in that: the processor is configured to output data for at least one of: A) initiating the un-pairing of the portable device from the further device upon a change from the second coupling state to the first coupling state; and, B) initiating the pairing of the portable device to the further device upon a change from the first coupling state to the second coupling state. I) a power source chargeable by a power supply separate from the portable device; the portable device configured to have a plurality of coupling states associated with the power supply; the power supply being separate from the device and remote from the further device; II) communication apparatus wirelessly connectable to the further device via a personal area network, PAN, and configured to enable the portable device to have a wireless connection state associated with the further device; III) a processor configured to: monitor a change between a first and a second of the said coupling states; wherein the first coupling state is associated with the power source being coupled to the power supply whilst the second coupling state is associated with the power source being uncoupled to the power supply; and, output data for changing the connection state based upon the change from the first coupling state to the second coupling state; characterised in that: the processor is configured to output data for at least one of: A) initiating the un-pairing of the portable device from the further device upon a change from the second coupling state to the first coupling state; and, B) initiating the pairing of the portable device to the further device upon a change from the first coupling state to the second coupling state. monitor a change between a first and a second of the said coupling states; wherein the first coupling state is associated with the power source being coupled to the power supply whilst the second coupling state is associated with the power source being uncoupled to the power supply; and, output data for changing the connection state based upon the change from the first coupling state to the second coupling state; A) initiating the un-pairing of the portable device from the further device upon a change from the second coupling state to the first coupling state; and, B) initiating the pairing of the portable device to the further device upon a change from the first coupling state to the second coupling state.