【Safe and Cruelty-Free】The anti-bark collar controls barking by vibration and sound, make sure your dog's health is our number one priority and would never produce a product that harms your dog. 【Adjustable Gear】The maximum diameter of the dog collar is 21cm (8.2 inches). It can adjust the pulse impact force and the impact force from 0-100 gears, and use different strengths to train pets, from weak to strong. 【Remote control】Remote control for bark collar, the large LCD screen displays operation instructions, and the LED lights are suitable for night lighting. 【Ultra Long Distance】The remote control distance can be up to 800 meters (in the absence of radio interference, this has been verified by hundreds of tests); if there is a retaining wall in the middle, the distance can be shortened. 【Adjustable Collar for All Dogs】 The shock collar is made of superior material; it is soft and comfortable for your dogs. Suitable for small, medium and large dogs.