Anti Dog Barking Pet Trainer LED Light Ultrasonic Gentle Chaser Petgentle Description: Training Aid: Dogs Will Learn To Stop Barking And All Other Unwanted Behavior By Associating Disobeying With Getting Bombarded With This Harmless Sound . Can Be Used To Train Dogs, Effectively Helping Train Dogs To Be Obedient, Correct Misbehavior And Stop Barking. Protect Yourself: It Can Emit Piercing Ultrasonic Tone That Dogs Hate, Expelling Unfriendly Dogs Away And Protecting Yourself From Dangerous Dogs Attacking When Walking, Jogging, Or Bicycling. Easy To Use: With Infrared Function Can Enhance The Ability For Expelling The Dogs From Longer Distance.this Can Change Your Pet's Bad Habit Of Barking Under The Principle Of Ultrasonic Sound . Harmless To Dogs: It Also Can Be Used As A Torch At Usual Times, Very Convenient To Use. work On Most Dogs, Safe And Effective, But No Harm To Human Body And Pets. Fits In Pocket : Protect Yourself While Walking, Cycling, Jogging, Skateboarding, Etc With This Handy Device. With Easy -to-carry Rope, Convenient And Easy To Carry. Specifications: 1. Lighting: Move the gear selector switch under the product to the “ Light ” file to use the flashlight function. 2. Training the dog: Move the gear selector switch under the product to the “I” file. Press the button switch “ON” on the top of the product to send the ultrasonic wave . At this time, you can train the dog. 3. Drive the dog: Move the gear selector switch under the product to the “II” file, press the button switch “ON” above the product to send the ultrasonic infrared . When the dog is used, the dog will escape. Package Includes: 1 Piece Dog training device. 1 Piece User manual. （Battery is not included）