Popular and used by professional trainers and first time pet owners. Can be used to help correct barking, pulling walking, sitting, aggression and other obedience behaviors. 800m Range - The Remote Training Collar provides a range of up to 800m with frequency of use, making it easy to train your dog in the park or yard. Waterproof Receiver - Works well even when submerged in water, allowing your dog to swim or bathe freely with the collar. The rechargeable remote and receiver can be charged at the same time, keeping your gear ready to go. Dog training collar with 0-99 adjustable levels of electrical stimulation, vibration, light and sound . Suitable for all dogs. Durable, adjustable (16-62cm) TPU collar accommodates small to medium-sized dogs. The collar’s remote and receiver use lithium-ion batteries for long battery life. battery (1-2 hours of charge time will give you 7-14 days of use). Plus, automatic power-saving modes help extend battery life when you’re not using them. (battery