The emergency alarm can make a loud sound to draw attention and protect you from having an emergency, even at distances as far as 606.9 feet. In addition, the sounds could last 50 minutes of continuous ear-piercing alarm. With LED lights, the emergency alarms can be applied for night lighting, suitable for people of all ages, such as students, the elderly, children, women, night workers, and so on. You can also use them for traveling, hiking, camping, and dog walking at night.