Personal Protection and Security Assurance. This personal alarm is designed to help you call for help in difficult or dangerous situations. The 140-decibel sound grabs attention, even from a distance, and lasts for approximately 60 minutes unless deactivated. Please keep it away from your ears. Quality Materials and Reusable. ABS material ensures the robust strength of this emergency alarm, making it more durable. The batteries are also replaceable, making this a non-disposable personal safety alarm. Requires 3 LR44 batteries (included). Practical Features and Decorative Appeal. This self-defense alarm can signal an emergency and quickly deter attackers. Its mini design allows it to be disguised as a bag decoration, so attackers won't notice it. LED Flashlight and Keychain Design. Portable safety alarms with flashlights can illuminate walkways in the dark, reducing your fear. Attach the emergency alarm to keys, school bags, backpack zippers, belt loops, schoolbags, etc. Versatile and Multifunctional. Perfect for students, children, the elderly, women, the sick, the disabled, night walkers, and anyone else. This small alarm device can play a vital protective role. Why not give it a try?