Feature: 1. Resistant To Friction: Ring with non allergic stainless steel ring outer insulating layer, resistant to friction 2. Adjust The Size For Easy Wearing: You can open the case of the wrist strap buckle and adjust the size for easy wearing 3. Long Life And No Dust: Easy to use and flexible, long life and no dust, can be used in more than 100 clean room environments 4. Very Stable: Bracelet resistance is less than 103Ω, wristband impedance coefficient is less than 50Ω, very stable 5. For Factory Workshop: Electrostatic discharge ESD wrist strap is suitable for factory workshop, electronic maintenance, without dust workshop Specification: Item Type: Cordless ESD Wristband Product Material: PU + stainless steel Product Size: Length: Approx. 19cm / 7.5in, Width: Approx. 17mm / 0.67in Bracelet Resistance: ≤103Ω Impedance Coefficient of Wrist Strap: <50Ω Use Scenarios: Factory workshop, electronic maintenance, without dust workshop. Package List: 1 x Cordless ESD Wristband