Headphones; Audio-video receivers; Batteries and battery chargers; Cases for smartphones; Computer hardware and computer peripherals; Converters for electric plugs; Electric door bells; Electrical plugs and sockets; Flashing safety lights; Scales with body mass analysers; Speaker microphones; Switches, electric; Tablet computers; Wearable activity trackers; Apparatus that employs light concentrating optics to concentrate sunlight and to aid in the conversion of sunlight into electric and ther...