GS0091: Scuba diving equipment and accessories, namely, scuba diving masks, mouthpieces for regulators, mouthpieces specially adapted for sports equipment, namely, mouthpieces for scuba diving masks, snorkels, and fittings for snorkels; diving protective helmets; two-way radios and audio/video communications systems comprised of ultrasonic audio-receivers and video-receivers; electronic diving wireless communication systems comprised of computer hardware and software for the transmission of data between two points; emergency position-indicating radio beacon