THE PERSONAL 911 weighs in at .88 ounces and stands at 5" tall by 1" wide, but make no mistake - it's a powerful horn that demands attention with every blast! The compact size of THE PERSONAL 911 is perfect for the purse, backpack, or nightstand. The 911 will give you a sense of security walking to your car after hours, attending evening classes, or at the campground. Perfect for singles, students, overtime workers, or senior citizens. Police department recommended, THE PERSONAL 911 is a safe alternative for theft and attack deterrency because it alerts and attracts attention and cannot be turned against you.