Wise D020 GPS pet fence system

Works great and all components are included in the box. Serious inquiries only. WIEZ GPS wireless dog fence system ONLY have a COLLAR RECEIVER, it use a GPS location technique, so it's more stable, and accurate than other traditional wireless fences that use a radio-frequency technique. A total of 12 high-quality satellites support the work, so we can provide a much better accuracy than other similar products. This GPS wireless dog fence can cover areas up to 3281 feet radius and up to a max of 776 acres allowing you to use it for OUTDOORS. Its control distance is adjustable between 98-3281ft. The vibration intensity and electric shock can be adjusted in three levels. Set it up once, and the latest model has a full Memory Function. You won't face any INTERFERENCE issues!