★Very popular and used by expert trainers and new pet owners. Can be used to help correct barking, leash walking, sitting, aggression and other behavioral obedience. ★Remote Training Collar uses RF434Mhz frequency to provide easy training your dog in the park or yard. ★It works even if submerged in water, allowing your dog to swim or bathe freely with the collar on. The rechargeable remote and receiver can be charged at the same time so your gear is always ready to go. ★Dog training collar with 0-99 levels of stimulation, vibration, light and sound. Suitable for all dogs. Durable and adjustable TPU collar can fit small to medium sized dogs. ★The collar’s remote and receiver have long battery life with lithium-ion batteries. Plus, automatic power saving mode preserves battery life when not in use.