Binoculars; [ Cell phones; Computer hardware; Headphones; ] Microscopes; [ Power supplies; Radios; Scales; Slide calipers; Sound transmitting apparatus; ] Spectacles; Telescopes; [ Theft alarms; Video cameras; Computer mouse; Electric sensors; Filters for optical devices; ] Magnifying glasses; [ Protection and safety apparatus, namely, inflatable flotation devices; Rechargeable electric batteries; Surveying instruments; Teaching apparatus in the nature of a guard that is attached to the body ...