New build a traditional fence, with the turn of a dial our Stay & Play Wireless Fence lets you create a circular boundary up to 3/4-acre. With this Wireless fence, you decide how far to extend the boundary to keep your pet secure in their designated space. Place the compact transmitter indoors and set up your new Wireless fence in as little as 1-2 hours. If you enjoy camping or traveling in your RV with your dog by your side, you can take this portable Wireless fence with you wherever you go. This fence comes with a rechargeable PetSafe Stay & Play Wireless Fence Receiver Collar. The collar has a tone-only mode plus 5 levels of adjustable static correction depending on your dog’s temperament. The collar is recommended for pets who weigh 5 pounds or more, and fits neck sizes between 6-28 inches. The interchangeable design of the collar strap lets you customize your pet’s collar using any 3/4-inch non-metallic strap of your choice