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. Ultra Durable & High Quality: The Portable Personal Alarm uses superior environmental and durable ABS plasticn, resistance to fall, crush and voltage, and high temperature, and the copper plug, not rusty, beautiful and durable, won't break in your most adverse conditions. Item dimensions L x W x H: 64*40*21.5mm Multi-Function: With LED lights, the emergency alarms can be applied for night lighting, 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. 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. Increase Your Safety: with the loud sound, this sound safe alarm is an ideal protective tool for you to run, walk, travel, exercise, or do other sports alone, keeping strangers and thieves away from you, suitable for kids, teenagers, women, elderly, and girls