ELECTRICAL AND/OR ELECTRONIC APPARATUS FOR RECORDING, TRANSMITTING AND REPRODUCING SOUNDS, NAMELY, ACOUSTIC ALARMS, VOICE SYNTHESIZERS, STEREO AMPLIFIERS, STEREO RECEIVERS, STEREO TUNERS, HEAD-BAND ACOUSTIC RECEIVERS, RADIO RECEIVERS, RADIO TRANSMITTERS; AUDIO RECEIVERS, AUDIO TRANSMITTERS, MICROPHONES, DICTATING MACHINES, TELEPHONES AND TELEPHONE APPARATUS, ACOUSTIC POSITIONING AND ORIENTATION DEVICES; UNDERWATER TRANSMITTERS AND/OR RECEIVERS, EITHER WIRED OR WIRELESS, FOR COMMUNICATION BETWEEN DIVER TO DIVER, DIVER TO SURFACE, SURFACE TO DIVER, AND DIVER TO SURFACE TO REMOTE LOCATION; ELECTRONIC DETECTORS FOR DETERMINING THE DIRECTION TO A BOAT OR VESSEL, A DIVER, OR ANY OTHER LOCATION; ELECTRONIC DETECTORS FOR LOCATING A BOAT, A VESSEL, A DIVER OR ANY OTHER LOCATION; DIVING APPARATUS AND EQUIPMENT, NAMELY, DIVING REGULATORS, TANKS AND BREATHING APPARATUS FOR USE IN SCUBA DIVING, GAUGES AND TRANSMITTERS FOR MEASURING AND TRANSMITTING DIVING PARAMETERS, NAMELY, BREATHING GAS PRESSURE, HYDROSTATIC PRESSURE, DIVE TIME, AND TEMPERATURE; BATTERIES; AC/DC BATTERY CHARGERS; UNDERWATER ELECTRICAL CONNECTORS; DIVING SUITS; EAR-PLUGS FOR DIVERS; MOUTHPIECES DESIGNED TO TRANSMIT AND/OR RECEIVE ACOUSTIC MESSAGES USED IN RELATION WITH DIVING; WATERPROOF HOUSINGS, MOUNTINGS FOR USE IN RELATION WITH DIVING

DIVING MASKS; SNORKELS