3D spectacles; Alarm monitoring systems; Apparatus for transmission of communication; Burglar alarms; Cabinets for loudspeakers; Dog whistles; Electric navigational instruments; Electric sensors; Electrical plugs and sockets; Electronic animal identification apparatus; Electronic collars to train animals; Pedometers; Periscopes; Photographic cameras; Polarizing spectacles; Smartwatches; Spectacles; Speedometer testers; Virtual reality headsets; Wearable activity trackers