4 Training Modes: Our dog training collar offers 4 operating modes: shock/vibration/light/sound. Vibration and shock are adjustable. The remote control has 1 to 99 individual shock and vibration levels. When using it, choose the appropriate level for your dog to better control your dog's behavior and help them stop bad behavior. Durable: The remote control uses advanced transmission technology, so you don't have to point directly at the receiver. Remote control messages can penetrate walls and other obstacles, making it easier to train your dog in the park or garden. Super Waterproof: The nylon collar's receiver can be used normally when the dog is drinking water or on rainy days. Thanks to the excellent waterproof performance, dogs can swim and dive! The collar is made of high-quality nylon, is soft and breathable, and won't hurt your pet's neck like other leather collars. The length of the collar can be adjusted to fit dogs of any size. Unique energy-saving design: Automatic