Abdominal belts containing built-in speakers for purposes of transmitting music/sounds/educational material to a fetus and built-in pockets in which to carry audio transmitters; Computer peripheral apparatus; Electric buzzers; Electrical cells and batteries; Electronic components, namely, piezoelectric switches; Electronic pens; Electronic switchers for audio and video signals; Food timers; Measuring devices, namely, fluorometers; Nets for protection against accidents; Optical apparatus and i...