Zesirmay would alwasy find something useful and good for the humans. The keychain can be a functional tools and self-help when people are in Danger. When the single girls hang out alone, they are easily to be attached by the crimals and this keychain can help them at the first time. They can struggle and get help easily. . When the elder people who is weak and mobility impairments fall, they can use this alarm to make a noise and get attention by the around and get help more easily. When child is out of the guardian's sight,it always makes people anxious,when the child is in an abnormal environment,the sound of the siren can make it easier for passers-by and guardians to detect,and help children out of danger. Self Defense Keychain Set Package include: 1.Security alarm ≥ 125DB 2.Window Breaker(Length: 7.5cm.Width 3.5cm. Window Breaker, Cut the seat belt) 3.Emergency whistle(Length:4.7cm. Looking for help when you are alone) 4.Love Heart-Shape Pom Poms Keychains (Width:10cm. Height:9.5cm) 5.No Touch Door Opener(Length:7.7cm. No touch when you click the buttons or open the door) 6.Bottle opener(Length: 6.5cm. Opening Height:1.2cm) 7.Wristband keychain( Active Length: 12CM) 8.Transparent plastic bottle(30ml and can fill in pepar oil or spicy oil or another use) 9.Lipstick bag protective cover(Active storing height:5.2cm, width: 2.2cm) 10.Transparent plastic bottle protective cover.