Aerials; Camcorders; Cameras; Microscopes; Pedometers; Periscopes; Telemeters; Telescopes; Battery boxes; Burglar alarms; Car video recorders; Cell phone battery chargers; Electronic interactive whiteboards; Electronic numeric displays; Global positioning system (GPS) apparatus; Infrared detectors; Lenses for photographic apparatus; Punched card machines for offices; Solar batteries; Surveying instruments; Tape recorders; Thermal imaging cameras; Tripods; Wearable activity trackers; Wearable ...