Features & details Dog Training E-collar - 3 training modes, 20 training levels for safer and more efficient training, different levels and different models of scientific training methods can be selected for different dogs. Stronger signal transmission training receiver – the distance of signal transmission between the remote and training receiver up to 1600ft , don't worry about signal loss during outdoor play. Safety dog training collar – IP67 waterproof level,more safety for the dog,Never worry about hurting the dog due to electric leakage caused by the dog getting wet. Long lasting battery life - the receiver lasting time up to 15 days , and the remote last for a month , Fully charged in 1-2 hours( Warm tips: for the safety of your pet, we recommend that the training time does not exceed 3 hours a day) Adjustable & Comfortable - the adjust length of the trap is 27.6 inches, suitable for the training of different dog breeds, improving the comfort of the dog wearing.(40) 230228-15