Recommended training steps: When a dog has bad behavior: 1. Use the beep mode to warn it; 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, briefly use the electric shock mode (the intensity is adjustable, which is completely safe for the dog). After receiving the different training warnings, the dog can stop its bad behavior every time it hears the beep warning. Generally, you will not need to switch back to vibration or electric shock mode. 100% waterproof receiver. It works even submerged in water, allowing your dog to swim or bathe freely with the collar. 800 Meters Range: The remote training collar uses RF434 MHz frequency for a range of up to 800 meters. Easily train your dog at the park or in the yard. Suitable for all dogs. Durable, adjustable TPU collar (16-62 cm) suitable for small and medium dogs. Rechargeable remote and receiver.