4 TRAINING MODES: Our dog training collar offers 4 working modes, which are Shock / Vibration / Light / Sound, Vibration and shock can be adjusted. The remote control has 1 to 99 levels of customized shock and vibration. When using it, choose the appropriate degree for your dog, so that you can better control your dog's behavior and help your pet eliminate bad behavior. UP TO 800M REMOTE CONTROL RANGE AND LONG BATTERY LIFE: The remote control uses advanced transmission technology and does not need to be directly pointed at the receiver. The remote control information can penetrate walls and other obstacles, which is convenient for training your dog in a park or backyard. SUPER WATERPROOF: The nylon collar receiver can be used normally when the dog is drinking water or on rainy days, and even when the dog is swimming and diving, the waterproof performance is super good! Made of high-quality nylon, the collar is soft and breathable and will not damage your pet's neck like other leather