Specifications:

• 3 Warning Modes & GPS Position: Our wireless dog fence is equipped with advanced GPS technology, providing much more stable and precise position than other traditional dog fences. 3 Extremely efficient and harmless warning modes (beep, vibration and electric shock modes) for you to keep dogs always wandering in safe and designated area.
• Up To 3280FT Adjustable Radius: Able to cover a boundary range of 98-3280ft (33-1093yards), making it adjustable to your desired dog’s playing area. We recommend this dog fence used for outdoor open fields, which don’t have high-rise buildings around it. And it is not suitable for indoor because of the poor satellite signal.
• Safe 0-9 Electric Shock/Vibration Level: Come with beep and adjustable 0-9 shock and vibration levels, so that you can find the proper level according to your dog's personal habits. Considered safety and risk of over-correction, the stimulus cycle of shock and vibration will stop after all 3 cycles even your dog is still out of safe area.

Wireless GPS Dog Fence Rechargeable Waterproof Electric Dog Collar 20 TO 2000 Meters Adjustable Radius Pet Containment System Outdoor for Large Medium Dogs