Very popular and used by expert trainers and first-time pet owners. Can be used to help correct barking, leash walking, sitting, aggression and other behavioral obedience 800 yards range - Remote training collar uses frequency to provide range range up to 800 yards, easily train your dog in the park or yard. 100% Waterproof Receiver - It works even if submerged in water, allowing your dog to swim or bathe freely with the collar on. Rechargeable remote and receiver can be charged at the same time so your gear is always ready to go. Dog training collar with adjustable levels from 0 to 99 for electrical, vibration, light and sound stimulation. Suitable for all dogs. Durable and adjustable TPU collar (16 to 62cm) able to adapt to small and medium dogs. The collar’s remote and receiver feature long battery life (1-2 hours charge time gives you 7-14 days of use) with lithium-ion batteries. Plus, automatic power saving mode helps preserve battery life when not in use.