The PetSafe Stay & Play Compact Wireless Fence keeps your dog safe in his yard so he can enjoy running, playing, or napping in the sunshine. Skip burying wires or building a traditional fence, just plug in the transmitter indoors and set up your new wireless fence in just 1 to 2 hours. The circular, wireless boundary adjusts to fit yards up to 3/4-acre. Since this fence is wireless, you can take it with you wherever you and your best friend go. Just pack it with you when you go camping or when you travel in your RV. The rechargeable PetSafe Wireless Fence Receiver Collar has a tone-only mode and 5 levels of static correction adjustable to your pets training response. In just 2 weeks, your dog can learn the new boundary with training. If your pet does ever leave the boundary area, he won't be corrected when he enters the safe play area again. If you have more than 1 pet at home, just purchase additional receiver collars so all of your pets can safely play in the yard together.