Calculators; Eyeglasses; Lifebelts; Smartglasses; Sunglasses; Wetsuits; Face masks for diving; Filters for respiratory masks for the prevention of accident or injury; Life jackets; Measuring glassware; Nose clips for divers and swimmers; Protective eye pieces; Protective face-shields for protective helmets; Scintillation counters; Scuba snorkels; Signal whistles; Surveying instruments; Swim goggles; Swim masks; Weighing apparatus and instruments