LABORATORY INSTRUMENTS USED FOR LABORATORY EXPERIMENTS; BATTERIES, ELECTRIC WIRES AND CABLES; OPTICAL GLASS, SPECTACLES; LIFE SAVING RAFTS AND LIFE-BUOYS; TELECOMMUNICATION INSTRUMENTS AND EQUIPMENT, namely A TWO-WAY COMMUNICATION SYSTEM WHICH CAN BE ATTACHED TO THE OUTSIDE OF HELMETS, HEADSETS, AUDIO SIGNAL RECEIVERS, VIBRATION DRIVERS, MICROPHONES USED FOR THE TWO-WAY COMMUNICATION SYSTEM, CELLULAR PHONES, CELLULAR PHONE INTERFACE MODULES; METRONOMES; OZONISERS; SPORTS TRAINING SIMULATORS, ...