Escape from shock due to discharge of static electricity. This anti-static keychain is easy to use, hold the discharger at the side with key chain, use the other side to contact objects conductor like Motor, car, computer, metal stuff and so on to discharge static. No battery need. This anti-static electricity keychain is powerful to eliminate static electricity. Avoid strong shock, dip in water and disassemble. Product Name:Static Rod Discharger Shape:Cylinder Tiny design makes it portable and handheld. Static Rod Electrostatic Discharger Portable Anti-Static Keychain Winter Dry Climate Static Eliminator Antistatic Car Supplies Colour:Silver & Transparent Material:Metal Size:6.3 x 0.9cm/2.5x 0.35inch (LxD);Keychain Diameter:2cm/0.79inch Package Contents: 1 * Static Rod Discharger Only the above package content, other products are not included. Note: Light reflection 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.