3D spectacles; Batteries, electric; Battery chargers; Camcorders; Cell phones; Computer hardware and computer peripheral devices; Computer keyboards; Data synchronization cables; Earphones and headphones; Global positioning system (GPS); Loudspeakers; Network routers; Solar cells; Tablet computer; Wearable activity trackers; Computer mouse; Electronic devices used to locate lost articles employing the global positioning system or cellular communication networks; Head-mounted video displays; P...