Adjustable Size: The cordless anti-static wrist strap can be adjusted according to the wrist size. Users can adjust the size of the anti-static wristband according to the size of the wrist. It won't scratch your skin or trap hair on your arms. PREMIUM MATERIAL: The wristband is woven from soft, flexible conductive yarn. Open the stainless steel case of the wrist strap buckle and adjust the size for easy wearing. It is a good wristband for electricians or ICbrLCC workers. An antistatic wristband is a device that can be worn on a person's wrist to release the static charge accumulated by the body. Wearing this anti-static wristband can safely eliminate static electricity generated in the body within 0.1 seconds. Worn on the wrist: A cordless anti-static wristband is a device that can be worn on a person's wrist to discharge the body's accumulated static charge. Wearing this anti-static wristband can safely eliminate static electricity generated in the body within 0.1 seconds. When in use, the wristband must be in contact with the skin. Main use: widely used in electronics, medical, photovoltaic, chemical, optoelectronic, military and other industries. It is suitable for production workshops, dust-free workshops, electronic maintenance and other places that require electrostatic value. Quantity: (1-pack) Anti-Static Cordless Wrist, other products not included Size: wrist width: 20mm (for reference only) Color as shown Note, because there may be color and size differences between the light effect photos and the actual product, please allow 1-2 cm error