【3 Training Modes】This dog shock collar has 3 modes: standard tone, vibration (1-8) levels and shock (1-16) levels. These modes are designed to correct dog behavior such as aggression, peeing in the wrong place, sitting at the wrong time, unnecessary barking and other inappropriate behaviors 【800M Remote Control】The training collar for dog is designed up to 800m far range so you can easily train your dog in the yard or park. 【Safety Lock Button & Memory Function】Safety lock button can protect your dog from accidental manipulation. Memory function for settings makes it easy to use, it means no need to reset the collar 【Waterproof and Rechargeable】The 100% IPX7 waterproof receiver collar allows you to train your dogs even on rainy days. But please make sure the charging port is closed when the receiver is submerged in water, and please don’t put it in water for a long time. The rechargeable transmitter and receiver can be quickly charged at the same time. Can be used for a long time