TWO Invisible Fence Indoor Shields Plus Wireless Dog Avoidance Transmitters With Original 2-Pin Adapter (the adapter has two connectors on the end to charge both units at the same time).  Works with all 800 Series and Boundary Plus Invisible Fence Receivers (not included).  Is not compatible with 700 Series receivers.  Can be easily set to 7k or 10k frequency by simply removing the cover and flipping a switch.  Owner's Manual is available to be viewed on-line.  Items pictured are the exact items you will receive.