Recommended training steps: When a dog behaves badly: 1.Use Beep mode to warn dog with sound; 2.If the dog does not react, use Vibration mode; 3.Vibration mode can have a good training effect for some dogs and stop their bad behaviors. If the dog does not react to the vibrations, use the electric shock mode for a short time (the intensity is adjustable, which is completely safe for the dog). After receiving the various training warnings, the dog can stop his bad behavior whenever he hears the warning sound. In general, you will no longer need to switch to vibration or electric shock modes. 100% waterproof receiver. It works even when submerged in water, allowing your dog to swim or bathe freely with the collar on. 800 Meters Range The Remote Training Collar uses RF434Mhz frequency to provide a range of up to 800 meters, easily train your dog in the park or yard. Suitable for all dogs. Durable and adjustable TPU collar (16 to 62) able to fit small to medium dogs. Rechargeable Remote