Recommended training steps: When a dog has bad behavior: 1. Use the Beep mode to warn the dog with a sound; 2. If the dog does not react, use the Vibration mode; 3. The Vibration mode can have a good training effect for some dogs and stop their bad behavior. If the dog does not react to the vibration, use the electric shock mode briefly (the intensity is adjustable, which is completely safe for the dog). After receiving the various training warnings, the dog can stop its bad behavior whenever it hears the sound warning. Generally, you will not need to switch to the vibration or electric shock modes. 100% waterproof receiver. Ilfon works even if submerged in water, allowing your dog to swim or bathe freely with the collar. 800 meters of range The remote training collar uses the 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 adapt to small and medium dogs.