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 - Remote training collar provides a range of up to 800m using the RF434Mhz frequency, making it easy to train your dog in the park or yard. 100% WATERPROOF RECEIVER - Works well even when submerged in the water, allowing your dog to swim or bathe freely with the collar. The rechargeable remote control and receiver can be charged at the same time, keeping your equipment ready to use. Dog training collar with adjustable levels from 0 to 99 for electrical stimulation, vibration, light and sound . Suitable for all dogs. Durable, adjustable (16-62cm) TPU collar accommodates small to medium-sized dogs. Collar 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 not