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 suits; gloves for divers; diving protective helmets; diving clothing for protection against accidents; two-way radios and audio/video communications systems comprised of ultrasonic audio-receivers and video-receivers; electronic diving wireless communication ...