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; Audio amplifiers; Audio speakers that may be attached with adhesive to the abdominal area of pregnant women for the purpose of transmitting music or sounds to the fetus, not for medical purposes; Automatic indicators of low pressure in vehicle tires; Baby monitors; Cabinets for loudspeakers; Earphones and headphones; ...