SAFESIREN Ultra-Loud Women’s Self-Defense Alarm KeychainFeel safer on every walk day or night with a simple pull pin alarm powerful enough to shock, scare off, and draw instant attention when you need it most. I used to dread the winter walk from the office to the car park its dark, quiet, and you hear too many stories. I got the SafeSiren for myself and one for my daughter, and the peace of mind is unbelievable. Its tiny on the keys, but the alarm is fierce. I tested it once in the garden and the