Our Story Dog Training Collar Do you have a naughty dog that exhibits behaviors such as biting a sofa or other objects in the house, bark even at night, suddenly run away? Have you tried training your dog but had no effect? Dog Training Collar is a useful training tool to help correct barking, walking , leash training, sitting, aggression, and other behavioral obedience. Very safe and easy to use. Important information: 1. Not used for training puppies under 6 months old. Recommended for medium and large dogs over 20 lbs. 2. We suggest you use vibration/tone/light mode to train your dog. Shock mode should always be the last mode to use. 3. The shock model has 0-99 levels, be very careful if you want to test high level. 4. Please avoid leaving the collar on the dog for more than 8 hours a day and try to reposition the collar on the pet’s neck every 1-2 hours 5. If the hair is too long at the dog’s neck, the receiver may not be able to fully contact the skin. It is recommended to cut