Loud noises help startle your attacker and turn bystanders into witnesses. This extremely loud personal alarm is 120 dB and audible up to 600 feet (185M) away. The sleek, attractive personal alarm resembles a memory stick, meaning it is just as discreet as it is loud. Offering instant access, the key ring attachment connects the personal alarm to your backpack, keys or purse. To sound the reusable alarm, simply pull the metal chain from the device. Push the pin back in to stop the sound. The child-friendly alarm is a self-defense option for any age. This keychain personal alarm is backed by 40 years in the security industry and developed by the #1 pepper spray brand trusted by police and consumers worldwide. ISO 9001:2008 certified. Protect yourself today!