1.Convenient Wireless Design: no need to bury wires, time-saving and hassle-free.The transmitter can be set to 8 intensities, you can find the right level for your dog<br>2.4-Level Distance Adjustable: There are 4 levels of adjustable coverage.The radius from the center of transmitter is 50m, 100m, 150m, 200m.Your dog can play freely and safely without worrying about restricted movement or getting lost.<br>3.Adjustable Collar and IP68 Waterproof Receiver: The belt can be adjusted from 8 to 25 inches, suitable for all types of dogs weighing between 10 and 120 pounds.And the receiver is IP68 waterproof, let your dog enjoy swimming, showering and playing in the rain.<br>4.Rechargeable Collar: With built-in rechargeable battery for transmitter and receiver, it does not need to be replaced frequently and is easy to use with a long service life.<br>5.Supports Multiple Receivers: These devices support many collars, so you can purchase additional collars and add them to the system.