Description: Color:Yellow, Black Material:ABS Item Type:Bark Deterrents, Repellents Battery Type:9V Alkaline battery (not included) Effective distance:5 to 10 meters Size:140*40*30mm / 5.51*1.57*1.18inch Sound pressure:125 dB Frequency:25 KHz Features: Ultrasound design: based on the theory that ultrasound, the dog trainer can effectively train your dogs to be obedient and stop some unwanted behaviors, such as barking, digging, chewing and more, also they are harmless to both humans and pets. Easy to operate: first open the battery cover and then put 1 piece 9V Alkaline battery (not included), the sound is audible only to pets, finally turn on the switch and it can work well, also they can serve as a flashlight when necessary. Handheld and Convenient: Size of the device is approx. 140*40*30mm / 5.51*1.57*1.18inch, which is portable and handheld, also convenient for you to carry anywhere you need, such as jogging or walking, cycling, park and so on. Multi-functions: except as a pet training tool, it also can prevent you from dog attacks, fit for training many kinds of dogs, such as pets, dogs in police and shepherding, suitable for outdoor work, travel and security night patrol. Three Modes: Training dog , Drive the dog , Illuminating. Package Include: 1 x Dog Trainer(No Battery) Description: The trainer is based on the theory that ultrasound (ultrasonic wave reaches up to 125db) is above the upper limit of human hearing and super ultrasonic and 28000mcd strong white light. It can activate visual and additive activation to dogs, cats and other animals, but there will be no effects on people. Three Modes: Training dog , Drive the dog , Illuminating. How To Use: 1. Illuminating: Slide the function switch to the first site, press the "BEAM" button, the machine can be used as a light. 2. Training dog: Slide the function switch to the middle site, and then press the button switch BEAM on the top of the product. 3. Drive the dog: Slide the function switch to the last site and aim at the mad dog, press the BEAM button, the dog will run away. The Following Conditions May Lead Poor Effect of Driving The Dog: 1. Your own dog, because dog knows that his owner will not hurt him. 2. In noisy environment, such as the downtown or the street. 3. A well-trained dog. 4. When the battery voltage is low. 5. The dog listen ultrasound too much, has become accustomed to it, doesn't fear. Ultrasound design: based on the theory that ultrasound, the dog trainer can effectively train your dogs to be obedient and stop some unwanted behaviors, such as barking, digging, chewing and more, also they are harmless to both humans and pets. Easy to operate: first open the battery cover and then put 1 piece 9V Alkaline battery (not included), the sound is audible only to pets, finally turn on the switch and it can work well, also they can serve as a flashlight when necessary. Handheld and Convenient: Size of the device is approx. 140*40*30mm / 5.51*1.57*1.18inch, which is portable and handheld, also convenient for you to carry anywhere you need, such as jogging or walking, cycling, park and so on. Multi-functions: except as a pet training tool, it also can prevent you from dog attacks, fit for training many kinds of dogs, such as pets, dogs in police and shepherding, suitable for outdoor work, travel and security night patrol. Three Modes: Training dog , Drive the dog , Illuminating.