Stands for photographic apparatus; Electric Navigational instruments; Radios; mobile power supply in the nature of a rechargeable battery; Headphones; Receivers Audio and video; Microphones; Cabinets for loudspeakers; Monitoring apparatus, electric, for monitoring electric current and electrical signals; Portable media players; covers for smartphones; pyrometers; wearable activity trackers; monopods used to take photographs by positioning a smartphone or camera beyond the normal range of an a...