STOP BARKING AND BAD BEHAVIOR: Stop unwanted barking, fighting, jumping, biting, nipping, chewing, whining, begging, and leash aggression | PROTECT YOURSELF AND YOUR PET: Use while walking, running, hiking, and biking to protect yourself and your dog from aggressive animals. Can also be used for personal protection when threatened | LOUD NOISE WORKS: Device produces a very loud buzz noise (more than 100 decibels) that you and other animals can hear. No shock, so humane. Effective on all dog breeds and other animals | EASY TO USE TRAINING TOOL: Push button and say command. Loud noise startles and distracts dog to stop unwanted behavior. Eventually, simply showing the device will deter bad behavior | INCLUDES REPLACEABLE BATTERIES, CORD & HOLSTER: Comes with 2 lithium CR2 3.0v batteries. Batteries can be replaced. Also includes easy to carry wrist strap and holster that can attach to pants or belt