Audio interfaces; Audio- and video-receivers; Automatic indicators of low pressure in vehicle tires; Automatic indicators of low pressure in vehicle tyres; Baby monitors; Dog whistles; Flash lamps; Flashlights for use in photography; Lens hoods; Light systems comprising light sensors and switches; Manometers; Monopods used to take photographs by positioning a smartphone or camera beyond the normal range of the arm; Optical apparatus and instruments, namely, optical ports for underwater photog...