The easy, high-tech way to keep your pet in your yard! After about 14 days of training, your pet learns that ignoring a warning beep results in a beep and/or mild correction. U.S.A. Common Usage: Pet barrier, Adjustable Fit: Yes, Compatible With: Property up to 25 Acres, Capacity: 1 Dog, Power Source: Battery for the collar and 12 volt adapter plugged into any 110v outlet., Battery Type: 6 Volt, Battery Included: Yes, Water Resistant: Yes, Includes: Lightning protection and grounding system, Assembly Required: Yes