[ Camcorders; Chronographs for use as specialized time recording apparatuses; Electric and electronic effects units for musical instruments; Electronic book readers; Loudspeakers; ] Magnifying glasses; Microphones; Microscopes [ ; Radios; Sound recording apparatus; Telecommunications transmitters; Telescopes; Tool measuring instruments; Transmitters of electronic signals; Astronomical spectrographs; Electric navigational instruments; Endoscopic equipment for industrial purposes; Infrared dete...