Dogtra EDGE Receiver and Collar Fully customizable & expandable Designed for professionals & serious amateurs 1 mile range Remote activated multi-mode locator light Non-stimulating vibration page Interchangeable Rheostat intensity dial or Selector "Step" dial stimulation Stimulation types in Nick, Constant, and a non-stimulating Pager vibration mode Built in high intensity LED lights on the receiver/collar 2-hour rapid charge Lithium Polymer batteries 1-mile range, Expandable to a two, three, or four-dog system Interchangeable Rheostat intensity dial or Selector "Step" dial stimulation Stimulation types in Nick, Constant, and a non-stimulating Pager vibration mode Built in high intensity LED lights on the receiver/collar 2-hour rapid charge Lithium Polymer batteries 1-mile range, Expandable to a two, three, or four-dog system