[ Burglar alarms; Cables, electric; Central processing units (CPU); Computers; Couplings, electric; Electric navigational instruments; Loudspeakers; Mobile phones; Pince-nez; Portable media players; Printed circuit boards; ] Protective cases for smartphones [ ; Rechargeable batteries; Slide projectors; Smartglasses; USB cables; Video monitors; Wireless indoor and outdoor speakers; Laptop computers; Tablet computers ]