This fully waterproof electronic collar is popular with dog trainers and pet owners. Its training system will help you control and train your dog, with vibration alarms, audible warnings, static punishments and much more. With its remote design, you can easily stop, run and recall remotely. and fight. It will be a good assistant for your training. Main Features: One to Three Fully Waterproof Design: The receiver is super waterproof, allowing your pet to swim or walk in the rain. Adjustable Levels: The vibration and vibration levels are adjustable from 1 to 99. We recommend that you gradually try to find the right level when using this pet training system for the first time. 3 Training Modes: Shock/Vibration/Sound. Blue Backlit Screen: Available at night. Remote Control Distance: 800 Meters (No Interference). 3 Channels: The remote control transmitter has 3 signal channels and can control 3 receivers of the same model. Automatic Power Saving: Automatic sleep mode and memory function