Cabinets for loudspeakers; Camcorders; Covers for smartphones; Earphones and headphones; Electric door bells; Headphones; Microphones; Protective films adapted for smartphones; Self-timers; Smart rings; Smartglasses; Smartwatches; Sun glasses; Telephone receivers; Telephones; Transmitters of electronic signals; Transparency projection apparatus; Video baby monitors; Virtual reality headsets; Monopods for cameras