ALEKO TS-DF07 Deluxe In Ground Dog System for One Dog Tone plus static correction only mode for training, Receiver is Water Resistant. Most reliable, cost-efficient pet fence containment systems available, Adjustable nylon receiver collar; Longlife Battery included Pulsed proportional stimulus ----- The closer your dog gets to the boundary, the stronger the shock gets. A buried wire transmits a harmless radio signal. Covers up to 10 acres with additional wire and flags, Best way to train your pet safely