This "Yasamaru Super" compatible with harmful electromagnetic waves, is not a product that cuts harmful electromagnetic waves, but it is that it energizes your body by using the functions of 13 special ceramic powders. Therefore, the electromagnetic wave number of electrical appliances may not be decreased even when measured with a gausmeter. However, if you measure the effects on the human body, it is a remarkable that it can be clearly demonstrated. Recognized for this performance has been hiring in department stores, bookstores, communications sales, defense agencies, Chinese Pharmaceutical Offices, dental clinics, and orthopedic clinics. It can also be used as a safeguard to protect against the harmful electromagnetic waves that are received from your surroundings when you go out, such as trains, cars, neighbors, etc.). If you cannot experience bad health due to using your mobile phone/smartphone or computer for a long period of time, please return the product for a full refund. (Shipping rate is the responsibility of the purchaser) Size (Diameter 0.4 inch (11 mm) x Thickness 0.03 inch (0.7 mm). Installation method is as a general rule, 4 pieces are attached to the 4 corners of electrical products and electronics. You can also attach it to a pendant or card to protect your body. Usage Time: Approx. 2 years.