3D spectacles; Earphones; Microphones; Scales; Smartglasses; Bags adapted for laptops; Computer keyboards; Computer monitors; Computer mouse; Electronic collars to train animals; Electronic notice boards; Megaphones; Protective films adapted for computer screens; Protective films adapted for smartphones; Rechargeable batteries; Temperature indicators; Vacuum tubes for radios; Wireless headsets for smartphones; Electronic navigational and positioning apparatus and instruments