Our pet training receiver collar is compatible with our GPCT4711 dog fencing system. Once the system is been started up and the signal is detected by the receiver, the receiver will automatically start warning beep, vibration or static shock to urge your dog to go back into the boundary. The correction siganls includes Beep+Vibration, Beep+Low Level Shock and Beep+High Level Shock. Keeps standby for 3-7 days after fully charged for 1.5-2 hours. The IPX8 waterproof performance allows your dog to play in wet grass or rainy weather. The 24.21in long adjustable collar strap can be adjusted to fit your dogàneck properly. Fit for dog of all sizes. (Only Receiver, Fencing System Not Included)