Alarm Sound Is LoudThis Emergency Personal Security Alarm Can Sound 120Db, Attract People'S Attention, And Can Effectively Scare Away Attackers And Ask People Around For Help; When You Are In Trouble Or Need Help, It Will Be Your Help. Small And LightweightThis Emergency Personal Security Alarm Has A Simple And Generous Appearance, Small In Size And Lightweight. You Can Put It On Your Wallet, School Bag, Backpack, Key, Belt Loop, Easy To Carry And Very Convenient. Environmental ProtectionThis Emergency Personal Security Alarm Is Made Made Of High-Quality Environmental-Friendly Plastic Materials, Strong Durability, And Comfortable And Smooth Shell, Giving You A Smooth And Delicate Feeling. Easy To UseThis Home Security Alarm The Emergency Can Be Activated By Lowering The Safety Buckle, Which Is Convenient, Quick And Easy To Use. When The Alarm Is Activated, The Alarm Will Sound Immediately, Reducing The Risk And Protecting Your Personal Safety. Applicable GroupsThis Emergency Personal Security Alarm Is Stable And Reliable, Which Greatly Improves User Safety . It Is Suitable For Joggers, The Elderly, The Disabled, Night Shift Workers Or People Living Alone, Especially Women And Children.