HIGHOT Rechargeable and Waterproof LCD Digital Pet Dog Training Collar with 100Levels and Vibration , Remote 1 Dog Provides a professional 100 level shock and 100 level Vibration with Rechargeable LCD digital remote control electric training Collar 100 levels of vibration & static.LCD digital remote screen The system can be used for 1 or 2 receivers. Recommend for dogs from 20 to 100 pounds This product is for pet training only , by training,the pet can understand the intention of its owner.Desirable results can only be achieved after a period of training.