Abstract: A supplemental display unit may provide information to a display associated with a wearable article. The supplemental display unit may share a communications channel with a mobile device, and exchange data with the mobile device over the communications channel while the mobile device resides within the wearable article. The supplemental display unit may generate a screen having a graphical user interface (GUI) based on the exchanged data, where an appearance of the screen is based on a measurement of the wearable article. The supplemental display unit may provide icons on the GUI presenting information to the user, where the icons may be arranged in groups based upon the type of information that each icon presents, and provide the GUI to the display, where the display is coupled to the wearable article.