Convenient Wireless Design: No need to bury wires, time-saving and hassle-free. The transmitter can be adjusted to 8 intensities, allowing you to find the right level for your dog.4 Level Adjustable Distance: Offers 4 levels of adjustable coverage with a radius from the center of the transmitter up to 50m, 100m, 150m, and 200m. Your dog can play freely and safely within the designated area.Adjustable Collar and IP68 Waterproof Receiver: The collar strap adjusts from 8 to 25 inches, suitable for dogs weighing between 10 and 120 pounds. The receiver is IP68 waterproof, allowing your dog to swim, shower, or play in the rain.Rechargeable Collar: Features built-in rechargeable batteries for both transmitter and receiver, reducing the need for frequent replacements and offering long-term use.Supports Multiple Receivers: The system supports multiple collars, allowing you to add additional collars to the setup as needed.