Aulyn Car Static Elimination Discharger Anti-Static Keychain (Blue) Anti-Static Keychain's size: about 2.1"long, Main Material : Metal Easy carrying with keychain design red light indicator when in touch with static Uses special electricity conducting material to effectively channel the static from your body to avoid electric shock Neon tube glows to indicate that the static electricity has been absorbed Can be safely and effectively eliminate the hazards of the daily life, work and vehicle traffic generated by a variety of middle-static environment