New and unused security alarm. This is an unused item I received. Operation has been confirmed. When the pin is pulled, a loud sound is emitted, making it recommended for crime prevention and disaster preparedness during school commutes, lessons, and going home. This type is easy to attach to backpacks and bags. Please refrain from purchasing if you are concerned about minor details due to home storage. There are 13 in stock at home. If you wish to purchase multiple items, please let me know in the comments. We will offer a discount for bulk purchases.