Size: 66*37*22mm Package content: 2* self-defense alarm 1.Audible alarm:The emergency alarm can emit a loud sound to attract attention, which can protect you from emergency situations. 2.LED FLASHLIGHT: The light is handy and very easily turns on with a press of the button to activate. Even in the dark, the pocket alarm system is a useful companion. The powerful LED light is very bright and helps to find the door lock or bag. It is also very useful for illuminating dark paths. 3.Wide range of applications:Suitable for people at all ages such as students, elderly, children, women, night workers and so on; You can also use them for traveling, hiking, camping and dog walking at night. 4.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. 5.Durable and high quality: Portable Personal Alarm uses superior environmental and durable plasticn, resistance to fall, crush and voltage, and high temperature, and not rusty, beautiful and durable.