describe:1. Safe and Healthy Barking Box - Our dog barking control device adopts high-pitched ultrasonic design, which is harmless to pets and humans. Dog anti-barking devices attract your dog's attention without causing pain and irritation.2. Multifunctional Dog Barking Silencer - 3-in-1 anti-barking device provides a safe and effective solution for dog training and barking boxes. Dog bark control devices help prevent barking, digging, scratching and other unwanted dog behaviors.3.LED Flashlight Settings - The barking dog silencer has a range of up to 16.4 feet, not only can it prevent barking, but the anti-barking device for dogs to stop barking also includes 2 super powerful LED lights to stop the aggressive behavior of dogs.4. Ergonomic design - The dog barking stopper is a small and lightweight ultrasonic barking box, an ergonomically designed dog barking control device with a more convenient S-shaped arc handle and an adjustable anti-static wrist strap .5. Easy-to-carry barking box - The small size of the dog barking control device fits perfectly in your hand. Because our bark stopper is lightweight, the barking dog silencer is perfect for you to carry around or keep in your pocket, press and hold the ultrasonic bark stopper for dogs to switch to start working, very simple.Specification:Material: ABSColor: blackFrequency: 35-45HKZSize: 4.3x1.5x0.8 inchesPower supply: Use one 9V alkaline batteryBox contains:1 x insect repellent