Static electricity will cause dry hair and influence the of the head. There will be static electricity when you the sweater. There will be static electricity when you open the car door. Eliminating the electrostatic principle: Magnetite + silica gel & rarr; magnetotherapeutic ring & rarr; regulating the positive and negative pole & rarr; static elimination Hot remember: 1. Avoid close strong and acid substance. 2. If you get caught in something, it turns off, just put the silicone back into the clasp. How to adjust the length of the bracelet: 1. Cut one side of the silicone band to the desired length with scissors. 2. Put around the clasp (clasp is stainless steel only) around the wrist and close it. Colour: gold buckle black Material: silicone + metal + magnet Size: length about 24cm Package Contents: 1 * bracelet Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.