Max-Pro 911 Horn Personal Safety Alarm 1.5oz Travel Size Great for Jogging, Shopping, Biking, and even Sporting events. Fits in your: Car, Purse, Backpack, or Coat pocket. 112 Decible sonic blast - Can be heard 1/2 mile away! Deters unfriendly and agressive animals! Convenient 1.5 oz travel size.