Introducing the USB Rechargeable Self Defense Personal Alarm Keychain - 130 dB Security. This innovative personal alarm is powered by a rechargeable lithium battery, eliminating the need for button batteries. Simply use the included USB data cable to charge it in just 30 minutes, and enjoy 1 year of standby time. With its ear-piercing 130 dB sound, this safety emergency alarm can draw attention from others even from 300 yards away. It provides up to 50 minutes of continuous sound, ensuring its effectiveness in emergency situations. Say goodbye to traditional self-defense weapons and rely on this alarm to protect your safety. There are two easy ways to activate the alarm. You can either pull out the contact pin or press the switch 2 times quickly. This ensures quick and hassle-free usage in any situation. Additionally, the alarm features a bright LED emergency flashlight, offering better visibility compared to traditional security alarms. The lightweight and portable design allows you to attach the alarm to your purse, backpack, keys, belt loops, or suitcases. It can even be brought onboard a plane, making it extremely convenient for travelers. Whether you're a student, jogger, elder, kid, woman, or night worker, this alarm is perfect for ensuring your safety.