Come and see our amazing products. This sound is long-lasting to one hour with a ear-piercing alarm.his personal alarm is very easy to use-pull out the bolt, the alarm will ring extremely loud. Plug in the bolt, the alarm will stop sound immediately. With a flash light button, you can also find thing in dark place.The personal safety alarm is a reused, non-disposable, easy to use.A must have for Students, Elderly, Kids, Women, Joggers, etc. It's also a security necessity for traveling, hiking, camping. Pls confirm with us about the packing info, stock color and exact production time before placing your order.