【3 Training Modes For Effective Training】With 3 learning modes: Beep Sound(8 different frequencies), Vibration(1-16 levels) and Electric Shock(1-99 levels adjustable), This dog training collar electric is used to educate your dog very easily by allowing him to correct his undesirable behavior without shouting: barking, attacking, running away, tendency to eat nonsense, making damage and digging, etc., especially for very stubborn and disobedient dogs. 【Adjustable Intensities & 【Adjustable Collar for Any Dog Size】Stimulation levels are optional, and you can choose the mode and its level based on the dog’s temperament (starting from the weakest stimulation). With adjustable belt from 15 to 70cm and possible to be cut to fit any size, this electric dog collar is suitable for most breeds (small, medium and large dog). Reflective nylon collar helps you locate the dog in the dark. 【Double Protection for Gentle Training】Safety keypad lock prevents mishandling by avoiding accidental