4 TRAINING MODES: Our dog training collar offers 4 working modes which can be set to shock/vibration/light/sound, vibration and shock. The remote control has personalized shock and vibration levels from 1 to 99. When using, please choose the level that suits your dog, so that you can better control your dog’s behavior and help your pet get rid of bad behavior. /p> UP TO 800M REMOTE CONTROL RANGE AND LONG BATTERY LIFE: The remote control uses advanced transmission technology and does not need to be pointed directly at the receiver. Remote control information can penetrate walls and other obstacles, which is convenient for training your dog in a park or garden. SUPER WATERPROOF: The nylon collar receiver can be used normally when the dog drinks water or in rainy days, and even if the dog swims and dives, the waterproof performance is super good! Made of high quality nylon, the collar is soft and breathable and won’t hurt your pet’s neck like other leather collars. The length of the