【Very Safe】: This automatic dog anti-bark collar will not harm the dog or constitute dog abuse. The contact column is made of silicone, which is flexible and reduces the stress on the dog’s skin, making it more comfortable to wear. This electric dog anti bark collar can better teach the dog not to bark, so you can get rid of the troubles caused by your dog’s barking. 【Adjustable Mode】: The dog training collar has 3 modes, 7 vibration levels can be adjusted. All these modes effectively prevent dogs from barking without hurting them. You can choose the most suitable mode to train your dog. This anti bark dog collar can be charged via USB. It takes 1-1.5 hours to fully charge and can be used continuously for about 14 days when fully charged. 【Adjustable Collar】: The electric dog collar has a circumference of 18.84-59.66 cm (7.4-23.5 inches), suitable for small dogs, medium dogs, large dogs and other pets between 7-54 kg . The anti-bark collar is made of nylon and is very durable. The dog