120db Safesound Personal Alarm- The emergency alarm can make a loud sound to draw attention to protect you from having an emergency even at distances as far as 328ft. In addition, the sounds could last 30 minutes continuous ear-piercing alarm.LED Design- This safety alarm keychain also has a LED light that can hel you in the dark. Suitable for night running, walking dog, traveling, hiking, camping and other outdoor activities.Easy to Use- The alarm will be activated when you pulled the contact pin out,and siren will sound continuously for 30 minutes unless unless pin is reinserted to device.Compact and Convenient- The safety alarm keychain has a portable size for easy storage and carrying; It can be attached to women's bags, backpacks, school bags, belt loops, suitcases, keys, dog belts and so on; And you can take it even you are on the plane.Durable& High Quality- The Portable Personal Alarm uses superior environmental and durable ABS plasticn, resistance to fall, crush and voltage, and high temperature, and the copper plug, not rusty, beautiful and durable, won't break in your most adverse conditions."