DOGTEK Electric Dog Fence Kit - Unlimited Dogs - 8 Correction Levels - Fully Waterproof Collars State Of The Art Transmitter With 2 Adjustable Zones Innovative, Fully Waterproof Collar With 8 Levels Of Static Correction 500 Feet Of Perimeter Wire and 50 Flags Includes Energizer CR2 battery (6 months battery life) Two Pairs Of Contact Points (Long And Short)