A system comprising: an audio device having a speaker , the speaker mounted or attached to a top surface of the audio device; and a wearable device having a first transceiver , the first transceiver configured to communicate using a first communication network having a first communication range , a second transceiver , the second transceiver configured to communicate using a second communication network having a second communication range that is less than the first communication range, and a receptacle , the receptacle configured to receive the audio device; the audio device having a third transceiver , the third transceiver configured to communicate with the second transceiver using the second communication network; the system characterised by : the audio device including a data storage device to store data received from the wearable device, and one or more audio device coils ; the wearable device having first and second wearable device coils , wherein the audio device coils and the wearable device coils provide, upon insertion of the audio device in the receptacle, an electrical connection to exchange data between the audio device and the wearable device ; and by the audio device being configured to share the data with a second wearable device upon insertion of the audio device into a receptacle of the second wearable device via an electrical connection between the audio device coils and one or more coils of the second wearable device. an audio device having a speaker , the speaker mounted or attached to a top surface of the audio device; and a wearable device having a first transceiver , the first transceiver configured to communicate using a first communication network having a first communication range , a second transceiver , the second transceiver configured to communicate using a second communication network having a second communication range that is less than the first communication range, and a receptacle , the receptacle configured to receive the audio device; the audio device having a third transceiver , the third transceiver configured to communicate with the second transceiver using the second communication network; the system characterised by : the audio device including a data storage device to store data received from the wearable device, and one or more audio device coils ; the wearable device having first and second wearable device coils , wherein the audio device coils and the wearable device coils provide, upon insertion of the audio device in the receptacle, an electrical connection to exchange data between the audio device and the wearable device ; and by the audio device being configured to share the data with a second wearable device upon insertion of the audio device into a receptacle of the second wearable device via an electrical connection between the audio device coils and one or more coils of the second wearable device. the audio device including a data storage device to store data received from the wearable device, and one or more audio device coils ; the wearable device having first and second wearable device coils , wherein the audio device coils and the wearable device coils provide, upon insertion of the audio device in the receptacle, an electrical connection to exchange data between the audio device and the wearable device ; and by the audio device being configured to share the data with a second wearable device upon insertion of the audio device into a receptacle of the second wearable device via an electrical connection between the audio device coils and one or more coils of the second wearable device. <EOS>