The horn from max Pro is a compact and powerful personal alarm that can be carried in your car, purse, backpack, brief case virtually anywhere! it is great to carry during such activities as jogging, shopping, biking and being out after dark. This 1.4-Ounce can emits a loud, 112DB ear-piercing alarm to scare off attackers. The loud noise deters even unfriendly animals, and can be heard up to 1/2 mile away.