Accumulators, electric; Adapter plugs; Answering machines; Battery chargers for use with telephones; Cases for smartphones; Cell phone straps; Conductors, electric; Covers for smartphones; Megaphones; Music headphones; Optical lenses; Protective cases for smartphones; Protective films adapted for smartphones; Resistances, electric; Rheostats; Telephone receivers; Telephone transmitters; Touch screens; Touchscreen sensors; USB cables; Cell phone battery chargers; Cell phone battery chargers fo...