For improving the grey scale portrayal, several dithering methods are used: Cell-based dithering, multi-mask dithering or error diffusion. In one embodiment, elements are shown in different layers based on their positioning schemes. As a result, a host electronic device can offer a more sophisticated user interface and portable electronic devices need less local user interface features because these operational settings can be remotely controlled. An audience criterion is identified, and an inquiry signal is received. , that complement wearability of the device, while still allowing for convenient charging. The illumination assembly is provided with at least one accumulator unit, at least one LED light, and configured with a contact switch.