This fully waterproof electronic collar is very popular with dog trainers and pet owners. Its training system will help you control and train your dog, with vibration alarm, sound warning, static penalty, etc. With its remote design, you can easily stop, run and recall remotely. and fight. It will be your good training assistant. Main features: one for three Fully waterproof design: the receiver is super waterproof, allowing your pet to swim or walk in the rain. Adjustable level: the vibration and vibration level are adjustable from 1 to 99. We recommend that you try gradually to find a suitable level the first time you use this pet training system. 3 training modes: shock/vibration/sound. Blue backlight screen: available at night. Remote control: 800 meters (no interference). 3 channels: The remote control transmitter has 3 signal channels, which can control 3 receivers of the same model. Automatic power saving: automatic sleep mode and memory function Adjustable collar size: the