Aerials; Battery chargers; Capacitors; Cases for smartphones; Connections, electric; Couplings, electric; Covers for smartphones; Electric buzzers; Electric contacts; Electric plugs; Electric relays; Electric sockets; Hygrometers; Integrated circuits; Light emitting diodes (LEDs); Printed circuit boards; Protective films adapted for smartphones; Resistances, electric; Semi-conductors; Temperature indicators; Triodes; Voltmeters; Computer chips