(3 Training Modes) This electric dog training collar has 3 modes: standard tone, vibration levels (1-8), and shock levels (1-16). These modes are designed to correct dog behaviors such as aggression, peeing in the wrong place, sitting at the wrong time, unnecessary barking, and other inappropriate behaviors. (800 m Remote Control) The dog trainer has a remote control range of up to 800 m, so you can easily train your dog in the garden or park. (Safety Lock Button and Memory Function) The safety lock button protects your dog from accidental operation. The settings memory function makes it easy to use, eliminating the need to reset the collar. (Waterproof and Rechargeable) The 100% IPX7 waterproof receiver collar allows you to train your dog even on rainy days. However, if the receiver is submerged in water, make sure the charging port is closed and do not immerse it in water for a long time. The rechargeable transmitter and receiver can be charged quickly and simultaneously. After a