20w solar street , parking lot , pathway, ranches, big back yard solar lamps. height suggested installation 4-5meters . big 28inch long arm base to hold lamp & solar panel , easy to install in pole or wall. 3days backup on rainy days . 3.2v / 32Ah po4 lithium batteries, solar panel power 5v/ 45w . 20 x 22 inch solar panel . on & off automatically by PR light sensor. coverage 110ft wide x 40ft front . 3years warranty in USA .