Aetertek AT-216C Waterproof Remote Dog Training Shock and Vibration Collar Stops dog's unwanted bad behaviors. Collar features vibration and ten levels of progressive electric static shock. Safe and effective. Very humane dog training e collar, strong vibration stops dog's bad behavior 99% of the time. Waterproof and Rechargeable Receiver. 100% waterproof and rechargeable receiver and goes up to 600 yards in range. Fits all dog sizes small medium and large dogs from 6 to 150 pounds with a collar size from 6 to 24 inches long. Best customer support. Fast customer email and phone support with 6 months replacement warranty. BUY WITH CONFIDENCE.