Accelerometers; riding helmets; protective helmets; protective helmets for sports; footwear for protection against accidents, irradiation and fire; protective suits for aviators; diving suits; telephone receivers; cases for smartphones; gloves for protection against accidents; knee-pads for workers; anti-glare glasses; spectacles; sunglasses; goggles for sports; 3D spectacles; divers' masks; smart glasses; smartwatches; spectacle frames; pince-nez; nose clips for divers and swimmers; pedomete...