The role of spar
Brief: the rare crystal is developed from a variety of rare crystals. It can emit far-infrared microwave with the same frequency as human body (known as "life light wave").
It can accelerate blood circulation, effectively promote cell growth, activate meridians and collaterals, enhance eyeball nutrition, and long-term wear can help the eyes to quickly detoxify, make blood circulation around the eyes more unobstructed, reduce fatigue when using the eyes, improve learning and working efficiency, and make the big brain clearer.