A headset for audio communications comprising a speaker housing and a boom for a microphone, the headset arranged to provide a retracted state and an extended state, wherein the boom is arranged to be wrapped around the speaker housing in the retracted state and be unwrapped from the speaker housing in the extended state. The pipes and manifolds are part of a heated closed loop heat transfer fluid system. The configurable surface includes a bi-stable material such as electronic paper. The search area is increased until the chip is located. As a result, three factors become critically important: the framework in which content is organized, stored and distributed; the control mechanisms by which content is played and presented, and as with any authoring system, the methods and means by which users create and edit content. This is achieved by means of the manufacturing method, in which the particles are used in an illumination step to mask regions of a photo layer.