Parmak DF-SP-LI Solar Pak 6 Low Impedance 6-Volt Battery-Operated 25-Mile-Range Electric Fence Charger Solar-powered electric fencer, lowimpedance and features exclusive built-in performance meter Shocks through wet weeds and brush - for livestock control - small to medium size pastures Charges up to 25 miles of fence- 1.4 joules Solar/Battery operate Made in USA