A mobile wireless communications device is for a user wearing an electronic hearing aid adjacent an ear of the user and may include an upper housing and a lower housing being slidably connected together for sliding between a retracted position and an extended use position. The probe electrically connects a semiconductor device and a tester for testing the semiconductor device. An external optical path is provided whereby the probe signal traverses from the probe light source, across the touchscreen surface, and toward the probe light sensor. The band also retains food within the gastric pouch to give the patient a feeling of satiety.