The device, based on the polarized light effect of calcite abundant in the country, promotes blood circulation and metabolism and prevents thrombus, raising immunity in human body.

It has a special virtue for various diseases, mental and physical fatigue, headache caused by a long-time use of computer, and insomnia.

Used like a wristwatch during sleep, it helps prevent heart failure and cerebral haemorrhage and thrombosis.

It won a gold prize at an international patent exposition held in China.