Personal Protection & Safety AssuranceAn attacker's worst enemy is attention. This personal alarm is designed to help you to ask for assistance or disorientate an attacker when you are in trouble. The personal alarm device aims for helping you to ask for assistance when you are in trouble or danger. 130db loud can draw people`s attention even in a far distance and will keep about 90 minutes if not stop it. So do not put it by your ears side. Loud Sound & LED Emergency FlashlightThe emergency alarm sound can make a loud 130db sound to draw people's attention even at distances as far as 606.9 ft The high decibel sound can effectively scare attacker in danger and seek people around for help. With built-in mini LED flashlight. this safe sound personal alarm keychain keeps your safer on a late night dog walk or when unlocking your front door late at night. It will be your good helper when you have troubles or need help. Lightweight & Portable Alarm Keychain: Self defense alarm can be attached to purse. backpack. keys. belt loops. and suitcases. It also can be brought onboard a plane. really convenient. fit for Students. Joggers. Elders. Kids. Women. Night workers USB Rechargeable BatteryBuilt in 150mAh Lithium-ion battery. can be used repeatedly. USB rechargeable makes the alarm more efficient and convenient. Charging time is only 30mins. Lighting time is about 75 minutes. flashing time is about 5.5 hours. and continuous alarm time is about 50 minutes. Protect The Safety Of Your Family Believe me. personal alarms are the best gift God has given you. wherever you go. or if you have children and elderly people in your family. who often walk alone. With it. you can effectively reduce the probability of danger. So you can be sure that the people you love are being protected and dont have to worry about your familys safety every day.